How scientific calculator works
A bounded recursive-descent parser supports + − * / % ^, parentheses, pi, e, sin/cos/tan, inverse trig, sqrt, abs, ln, log, exp, floor and ceil.
Try an example
sqrt(144) + 2^3 → 20.
Good to know
Trigonometric arguments are radians. % means remainder. Use explicit * multiplication. No input is evaluated as JavaScript.
Your privacy
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