Expressions

An expression is some combination of constants, variables, functions, and operators. For example:

 A*COSD(X/10)+3.5*SIND(X/12)+C*EXP(-X)

Input is limited to 255 characters, so to have expressions that are longer, use character variables to store its pieces and the EVALUATE function to evaluate the expression numerically. For example:

F1 = '2.5*COS(X/10)+3.5*SIN(X/12)+63.7*EXP(X/45)'
F2 = '1.234567*MOD(X,100)+SIN(X/1000)*EXP(X/200)'
F3 = '3.56789*X^2-2.34567*X+23.456'
F = 'F1+F2+F3'
Y = EVALUATE(F)

You can use the EXPAND function to expand all the parts of a string. For example, with the above variable definitions, =EXPAND(F) will display:

(2.5*COS(X/10)+3.5*SIN(X/12)+63.7*EXP(X/45))+(1.234567*MOD(X,100)+SIN(X/1000)*EXP(X/200))+(3.56789*X^2-2.34567*X+23.456)

Assignments
String assignments
String arrays
Evaluations

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