Top 6 Calculator Apps For Android

!±8± Top 6 Calculator Apps For Android

The Samsung Galaxy S, Droid X, MyTouch 3G Slide, Evo 4, the list goes on and on. Many of the hottest smartphones on the market today run on Google's Android OS. With each new device released for Android, the buzz about the system grows.

A quick search of "calculator" on the Android Market returned about a thousand results, far than most people would like to sort through. You'll find dozens of tip calculators, BMI calculators, mortgage calculators, love calculators, and more that are probably not what you are looking for. Luckily for you, we've done the hard work of searching through all of those apps for you and found these 6 worthy of your consideration.

#1 - HandyCalc Calculator by mmin

HandyCalc Calculator is our choice for the top calculator available on Android today. This app give you a lot of the basic functionality of a TI-84, including all scientific calculator capabilities, graphing, and the ability to solve systems of equations. Answers can be returned in fraction and radical form or converted to decimals. There are also simple copy and paste capabilities, something that should be available in more apps. The app even comes with a demo doc and a link to a video tutorial. There's a lot to like here, and even if it's not perfect, it comes as close as anything we've seen.

Pros: Free, scientific and graphing capabilities, solves systems of equations, returns both exact answers for fractions/radicals as well as decimal approximations.

Cons: Missing features of a typical grapher such as max/min, intercepts, etc.; swiping between keypads presses buttons and feels awkward; two different "equals" buttons (which perform different functions) can be a bit confusing.

Cost: FREE

#2 - Scientific Calculator by Kreactive Technologies

Scientific Calculator had the nicest UI of any calculator app we reviewed. Buttons are attractive, with a nice top-lit effect, and a good size, making them easy to press. A flick scroll or double arrow button allows you to easily access scientific functions. The calculator does feature some basic graphing capabilities. This calculator comes very close to 2-line functionality. You can enter an entire calculation before pressing enter. Then you can return to previous calculations by long pressing the input area. There are more powerful apps on this list, but UI is important in an Android app, and Scientific Calculator has a great one.

Pros: Free, attractive UI, some functionality of a 2-line calculator, some graphing functionality

Cons: Graphing functions limited; comments in the market indicate some users confused by lack of +/- button, although we found this easy to work around.

Cost: FREE

#3 - Calculus Tools by Andy Mc

A fantastic calculator app for calculus students is Calculus Tools. As its name implies, this app is focused almost exclusively on calculus, so it's not for everyone. The app can find integrals as well derivatives up to the fourth degree, both algebraically as well as with with defined limits. It also has the ability to help you solve problems involving arc length, surface area, and Taylor series. Your results can also be graphed. The app also contains a pretty extensive list of formulas that calculus students have to memorize. The only real drawbacks with this app are that its scientific calculator mode is still in beta and fairly limited, and that all inputting must be done with your default keyboard.

Pros: Free, solve calculus functions symbolically or numerically, ability to graph functions, great "cheat sheet" of calculus formulas

Cons: Scientific calculator features still in beta, must use default keyboard instead of a custom math UI

Cost: FREE or .50 donate version

UPDATE: A math keyboard was added in an upgrade to Calculus Tools

#4 - Arity Calculator by Mihai Preda

Arity Calculator has a far different UI and capabilities from the other apps on this list. If you are looking for a good 3D grapher, this is it. You have the option to graph in either 2D or 3D, and simply pressing enter will take you to a clear prompt but will save your equation where it can easily be tapped if you need it later. We'd find it hard to recommend this calculator to a novice, but it's sharp 3D features will definitely appeal to many users. Arity is also an open source app.

Pros: Free, open source, fast, 3D capabilities, screenshots of graphs

Cons: Almost all commands (such as sin, cos, tan) have to be typed out; although you can navigate graphs and zoom in and out, there is no way to trace, find intercepts, etc.

Cost: FREE

#5 - RealCalc Scientific Calc by Brain Overspill

If you're looking for something comparable to a TI-30 (one line), the RealCalc Scientific Calc fits the bill. It's free, fast, and offers all the functionality of a standard scientific calculator. It also features an excellent help menu for new users. The UI isn't exactly the sexiest, but we are sure some will appreciate how much it authentically looks like a retro calculator. Although we'd have preferred to see an authentic two line display, the developer has provided a previous answer feature, which can be set to retrieve numerous previous results.

Pros: Free, fast, simple to use, offers functionality of a standard scientific calculator, Reverse Polish Notation option will appeal to some

Cons: One-line calculator interface, no graphing options, retro UI straight out of 1985 will not be for everyone

Cost: FREE

#6 - Calc+ by EricJohnson

Like many Android apps, Calc+ is available both in free and paid versions. The free version gets you the features you expect in a scientific calculator. The paid version offers the additional functionality of haptic feedback (vibrate) and unit conversions. In a clever UI decision the developer allows users to switch between a simple calculator and scientific mode by rotating rotating from portrait to landscape mode. The design is minimalistic, yet attractive. The biggest drawback to Calc+ is no ability to change from its default mode of radians into degrees.

Pros: Free version available, simple and attractive UI

Cons: One-line interface, trig calculations only in radians

Cost: FREE or $.99

Top 6 Calculator Apps For Android

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Scatter Graphs

!±8± Scatter Graphs

Is a scatter graph to plot the information on two variables. It consists of plotted points, all of which are distributed throughout the lattice XY. The main use of the scatter plot is to display the strength of the co-relation between the two figures. You can also say that scatter plots are used to create the relationship between two variables for a series of paired data. They are mainly used in science to study the relationship between two variables. So it wasfound that the pattern of spread of the relationship and should follow the trend lines describing the data trend. Sign up as many points as possible and let an equal number of unconnected points on both sides.

Scatter is a graph that is how the graphic baseline and require at least two numeric attributes. The model of the dispersion shows a relationship between the two variables used by the X and Y-axes measured or in the case of a 3-dimensional form, isamong the three variables which are measured by X, Y, and Z axes). In a 2 dimensional scatter graphs; one can illustrate trends in the plotted points by just adding a regression curve. It has been noted that the scatter graphs can show multiple data sets, each of which is represented by a different symbol, and each will have any number of data points.

Scatter graph are the one, which clearly establish the data correlation and is one of the best method to illustrate a non-linear pattern. It can be used for data extrapolation and interpolation. A scatter graph generally shows the discrete values which don't occur at regular intervals or which belong to a series. That makes it different from a line graph, which are drawn using only the symbols.

One of the main advantages of a scatter graph is that it demonstrates a typical relationship, which is generally not so clear in various graphing methods normally used. While using standard functions in the Graphics Server DLL, we can define a scatter graph by normally supplying an X position for each data point. It should also be noted that when we use a Graph Control or when we use Graphics Server's autograph DLL, no X positions is supplied and the it will place points at X increments of 1 automatically, starting at 0.

It should be noted that in 3 dimensional (3D) scatter graphs, Z positions are not handled in this way and we needs to supply a Z value for each and every point. We can display scatter plots alone, curves alone, or both while using a 2 dimensional (2D) scatter graphs. While in a 3D scatter graphs, its totally different and we can connect points in the same set with a continuous line. Also we can drop a vertical line from each point.

The limitation of a scatter graph is that, they can just show relationship between two variables at a time. They can also show incorrect graph analysis if there are only few data points available.

Main use of a scatter graph is to visualize the actual measurements or observations on a grid which may reveals patterns and trends (by adding the curves) in those data used on the grid.

Scatter Graphs

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Chemistry - The Mathematics Necessary For Basic Chemistry

!±8± Chemistry - The Mathematics Necessary For Basic Chemistry

Chemistry can be a very exciting. Substances can be mixed into new things that change the color, create odors and create go BANG! Chemistry is the backbone of drug research, CSI detective work and the development of the food. So the chemistry is very attractive for many students to recognize them, must have some math skills.

But do not worry, the math skills for basic chemical research is needed very simple and can be mastered by one. So here's a list ofthe most commonly used math skills in chemistry.

Scientific Notation

Scientific notation is a very useful tool. It allows chemists to write very large and very small numbers easier. It involves using powers of ten to reduce the number of digits you will have to write.

10, 000 becomes 1 x 10^4
.0001 becomes 1 x 10^-4

Significant figures (sig figs)

Significant figures (sig figs) help chemists maintain the integrity of their data. Calculations are only as good as the data collected. The data is only as good as the tool being used and the tool is only as good as the person using it. If your measuring device only measures to a tenth of a unit, your precision cannot be better than that of the tool. Understanding how significant figures work maintains the integrity of your data.

Fractions

Many calculations in chemistry require the ability to manipulate fractions. You need to understand how to clear fractions, reduce fractions and find a common denominator.

Decimals

Being able to work with decimals is very important because most measurements in chemistry are not exact. Many of your measurements will be parts of things (fractions) and it is better to use decimals rather than fractions in describing your data. You need to know place values and how to convert fractions to decimals.

Percents

It is important that you understand percents in chemistry because many times your data will be converted to a percent for comparisons. Percents are not very difficult to understand. Percents are just another way to write fractions and decimals. Example: 1/2 =.50 = 50%

Pre-algebra

Most chemistry problems only require simple pre-algebra skills. If you can solve simple equations and create a basic coordinate graph, then your algebra skills will be sufficient. There is no need for calculus or even pre-calculus.

Calculator

In order to make chemistry even simpler, you should invest in a TI-84 graphing calculator. The time and headaches that will be solved by learning to use a calculator will be well worth the investment. A TI-84 not only can do the usual arithmetic, but it can help sort and graph your data.

Chemistry - The Mathematics Necessary For Basic Chemistry

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How to use a TI-83 Calculator Correctly for Scientific Notation | www.whitwellhigh.com

!±8± How to use a TI-83 Calculator Correctly for Scientific Notation | www.whitwellhigh.com

Correctly use a TI-83 Calculator involving Scientific Notation | Get your TI-83 from here: www.whitwellhigh.com/ti83.zip | Chemistry Whitwell High School UTC - University of Tennessee at Chattanooga | www.whitwellhigh.com Instructor/Professor: Johnny Cantrell

How to use a TI-83 Calculator Correctly for Scientific Notation | www.whitwellhigh.com

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Nutritional Value of Sweet Potatoes

!±8± Nutritional Value of Sweet Potatoes

Sweet potatoes' history goes back to a very long time ago. People started consuming sweet potatoes from back in the day. It is one of the oldest vegetables on this earth as they are cultivated long way back. It is, however, not a huge wonder why they are widely used today since the vegetable is sweet, tasty and very versatile when it comes to preparation and presentation. It is grown in almost every part of the world. There are very many types of potatoes almost totaling 400. The color of the insides of these potatoes also varies ranging from orange to white to yellow. The outer skin color also has its varieties and they include white, orange, red or purple in color. The sweet potato is a very nutritious and can be eaten as a cooked vegetable or cooked and mixed in dishes.

The sweet potato can boast of having the following vitamins -vitamin A, vitamin C and vitamin E. The minerals found in this potato include potassium, magnesium and beta carotene. It also contains a lot of anti-oxidants.

The sweet potato has a lot of health benefits. Here are some examples of its health benefits:

• It is able to reduce the chance of suffering from diabetes or heart disease.
• Sweet potatoes also reduce the chance of becoming obese.
• The residual water that remains after one has boiled the potatoes can be used to cure arthritis. It also helps ease joint pains. This can be done by applying the boiled water where one is experiencing the pains.
• The fiber that is found in this potato helps in the bowel function. It reduces constipation. The fiber also reduces the chance of getting rectal cancer.
• They can also aid those who need to lose weight. This is because once consumed; it gives a person a feeling of fullness but does not lead to much gain weight. With the fullness, it will help control your food intake.
• These potatoes also contain potassium. The potassium helps boost the body fluid maintaining capacity. The potassium also helps maintain the integrity of the cells and balance of the electrolyte.
• Sweet potatoes contain beta carotene, which in turn, also helps in fighting off the free radicals in the body. These free radicals are known to contribute to cancer risk.
• They also help in the purification of the blood and maintain the blood pressure.
• If taken on a regular basis they can help cure an inflamed colon. It also helps reduce pains developing from ulcers.
• Sweet potatoes are also known to increase the density of the bone. This is because they have very high amount of calcium, thus, helping in bone formation and in making these bones stronger.
• They also help treat sleeping sickness.
• These potatoes also prevent hardening of veins and arteries walls.

The great taste of sweet potatoes coupled with all the health benefits should entice you to include them in your meals regularly. Aside from cooking them in dishes, you can also boil sweet potatoes for snacks.

Nutritional Value of Sweet Potatoes

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