Scientific Calculator
Type an expression or use the keypad. Trigonometry uses the angle mode you pick. Nothing is uploaded.
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How to evaluate an expression
- Type a formula, or tap the keypad to insert numbers and functions.
- Choose Degrees or Radians before you use sin, cos, tan, asin, acos, or atan.
- Read the value. Use ^ for powers and ! for factorial of a whole number.
- Fix the expression if the status line reports an error. This page does not do algebra.
Scientific calculator
Restricted arithmetic expression evaluator
| Operators | + - * / ^ % and parentheses |
|---|---|
| Functions | sin cos tan asin acos atan sinh cosh tanh log ln sqrt abs floor ceil round exp fact |
| Constants | pi and e |
| Not included | Symbolic algebra, graphing, or a TI-84 program memory |
What this calculator evaluates
It parses a typed formula in this tab. Allowed tokens are numbers, parentheses, + - * / ^ %, factorial !, constants pi and e, and the function names on the keypad and in the list below. Unknown names and extra characters are rejected. The parser does not call eval.
Functions: sin cos tan asin acos atan sinh cosh tanh log log10 ln sqrt abs floor ceil round exp fact. log is base 10, matching log10. Percent % is remainder, not 'percent of.'
Implicit multiplication
2pi, 2(3+1), and (2)(3) multiply. sin(30) is still a function call. Write pi*e or pi e. A space between two values is treated as multiplication when both sides are values.
Degrees and radians
Trigonometric functions use the angle mode. sin(30) is 0.5 in degrees. Inverse trig returns an angle in that same mode. Hyperbolic functions are not scaled that way. Factorial needs an integer from 0 to 170.
What it will not do
It is not a computer algebra system. It will not simplify x^2-1, store programs, or plot a graph. For a percent of a number use the percentage calculator.