Common calculator operations:

+ = plus (addition)
- = minus (subtraction)
* = times (multiplication)
/ = divided by (division)
^ = raised to the power (exponentiation)
1/x = 1 divided by x
acos = inverse cosine
acsoh = inverse hyperbolic cosine
asin = inverse sine
asinh = inverse hyperbolic sine
atan = inverse tangent
atanh = inverse hyperbolic tangent
cos = cosine
cosh = hyperbolic cosine
e = the number e (2.71828...)
exp = exponential operation
ln = natural logarithm
log = base 10 logarithm
pi = the number pi (3.14159...)
sqrt = square root
sin = sine
sinh = hyperbolic sine
tan = tangent
tanh = hyperbolic tangent