This question asks for a number or a calculation.

You can enter whole numbers, negative numbers, or decimal numbers. If you enter a decimal value, be sure to give at least 3 decimal places.

Alternatively, you can enter mathematical expressions. Some examples:
EnterTo get
sqrt(4)4\displaystyle \sqrt{{{4}}} = 2
2/(5-3)25−3\displaystyle \frac{{2}}{{{5}-{3}}} = 1
3^232\displaystyle {3}^{{2}} = 9
sin(pi)sin⁡(π)\displaystyle {\sin{{\left(\pi\right)}}} = 0
arctan(1)arctan⁡(1)=π4\displaystyle {\arctan{{\left({1}\right)}}}=\frac{\pi}{{4}} (note: tan^-1(1) will not work)
(sin(2))^2 (sin⁡(2))2\displaystyle {\left({\sin{{\left({2}\right)}}}\right)}^{{2}} (note: sin^2(2) will not work)
log(100)log⁡(100)\displaystyle {\log{{\left({100}\right)}}} = 2


Note that when entering functions like log, sqrt, sin, cos, etc. that you must use parentheses. "sin(3)" will work, but "sin3" and "sin 3" will not.

Try it here. Use the Preview button to see how the computer is interpreting what you typed.

Enter 52\displaystyle \frac{\sqrt{{{5}}}}{{2}}:  

Enter 73\displaystyle \frac{{7}}{{3}}:  

Enter 1cos⁡(π3)\displaystyle \frac{{1}}{{{\cos{{\left(\frac{\pi}{{3}}\right)}}}}}:  

Enter sin⁡2(π4)\displaystyle {{\sin}^{{2}}{\left(\frac{\pi}{{4}}\right)}}:  

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