Numerical answers may be given in standard or scientific notation:
Do not put commas in numbers. Use
You may refer to the constants and fixed variables in any problem by name:
Pi and pi are always
Arithmetic operations are * / + -
Implicit multiplication is not recognized. Use 3*a,
3a. Use g*(H+h), not
Powers use ^, as x^2 is x2
Order of operation: ^ precedes * or / which in turn precedes + or
-. x^2/3 and
x^(2/3) are different as are 2/3*5 and
Use parentheses liberally to avoid ambiguity and errors.
Square root: either sqrt(x) or
x^(1/2) are OK.
ex is exp(x)
ln(x) is log(x) or
log10(x) is log10(x)
Note that angles are always given in radians!
sin(x) is sin(x), etc.
tan-1(y/x) can also be written
as atan2(x,y), etc. This form is superior when there
can be a question of quadrants.
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