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FutureStarrScientific Calculator With Math Button
What's the simplest calculator that has a math button?
There are many brands of scientific calculators out there. Each brand operates a little differently. You will need to become familiar with the way your scientific calculator works. For example, when performing trigonometric calculations, some calculators need you to enter the degrees first before choosing the appropriate trig function. Other calculators need you to enter the trig function followed by the degrees. So, for the trig function sin (60), you could be entering either   [sin] or [sin]  . Also, if you are working with angles, make sure your scientific calculator is using the appropriate angle measurement - either degrees or radians. You will see a button for [DEG] or [RAD]. In some calculators, one or the other will be the secondary function of a button. Your scientific calculator will allow you to make some more complicated calculations. For example, if you needed to find the fifth root of a certain value, then you can push the power [x^y] button to allow you to specify the power that you want. Remember that a fifth root is the same as taking the number to a power of 1/5. So, the fifth root of 25 is 25^(1/5). Parentheses are needed to tell the calculator that you are taking your number to a power of 1/5 and not just 1. So, to calculate the fifth root of 25, you push   [x^y] [(]  [/]  and then [)].
Also, you might need to use the inverse trig functions to solve problems. Some calculators have the inverse trig functions as actual buttons if not secondary functions of the trig buttons. Other calculators have a simple inverse [inv] button that you can push. To use the inverse button, you push the [inv] button first, and then you push the trig function that you want the inverse of. So, if you needed the inverse tangent function, you would push your degree value, then [inv], then [TAN]. In some other calculators, you will push [inv], then [TAN], and then your degree value. It's important to get to know your calculator, and this is why testing centers tell you to bring a calculator you are familiar with!Each brand of scientific calculator operates slightly differently. You need to become familiar with how yours works. Some require you to push the math operation after the numbers, while others require you to push the math operation before the numbers. For example, to calculate the trig function sin (30), some calculators require you to push 30 and then the [sin] button, while other calculators require you to push the [sin] button, then 30. It is very important to know how your particular calculator works so that you enter your numbers and operations in the right order for your calculator. (Source: study.com)