−
Inserts a minus sign.
√
Inserts a square root sign.
ʃ
Returns the integral of an expression.
When one expression is used as an argument, this command returns the indenite integral with respect to x.
Optionally, you can specify the variable of integration and the bounds of a denite integral using three
additional arguments.
Examples:
int(1/x) returns ln(abs(x))
int(sin(x),x,0,π) returns 2
int(1/(1-x^4),x,2,3)) returns -1/4*(2*atan(2)+ln(3))+1/4*(2*atan(3)-ln(2)+ln(4))
≠
Inequality test. Returns 1 if the left and right sides are not equal and 0 if they are equal.
≤
Less than or equal inequality test. Returns 1 if the left side of the inequality is less than the right side or if the
two sides are equal, and 0 otherwise.
≥
Greater than or equal inequality test. Returns 1 if the left side of the inequality is greater than the right side
or if the two sides are equal, and 0 otherwise.
►
Evaluates the expression then stores the result in variable var. Note that cannot be used with the graphics
G0–G9. See the command BLIT.
expression ► var
i
Inserts the imaginary number i.
–1
Returns the inverse of an expression.
(Expr)
–1
466 Chapter 22 Functions and commands
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