SolveForYIntercept
Solve for y-intercept. Takes as input the coordinates of a point (x, y), and a slope m, and returns the y-
intercept of the line with the given slope that contains the given point.
SolveForYIntercept(x, y, m)
Example:
SolveForYIntercept(2,3,-1) returns 5
Quadratic Explorer functions
SOLVE
Solve quadratic. Given the coeicients of a quadratic equation ax
2
+bx+c=0, returns the real solutions.
SOLVE(a, b, c)
Example:
SOLVE(1,0,-4) returns {-2, 2}
DELTA
Discriminant. Given the coeicients of a quadratic equation ax
2
+bx+c=0, returns the value of the discriminant
in the Quadratic Formula.
DELTA(a, b, c)
Example:
DELTA(1,0,-4) returns 16
Common app functions
In addition to the app functions specic to each app, there are three functions common to the following apps.
These use as an argument an integer from 0 to 9, which corresponds to one of the Symbolic view variables for
that app.
●
Function (F0–F9)
●
Solve (E0–E9)
●
Statistics 1Var (H1–H5)
●
Statistics 2Var (S1–S5)
●
Parametric (X0/Y0–X9/Y9)
●
Polar (R0–R9)
●
Sequence (U0–U9)
●
Advanced Graphing (V0–V9)
CHECK
Check. Checks—that is, selects—the Symbolic view variable corresponding to Digit. Used primarily in
programming to activate Symbolic view denitions in apps.
CHECK(Digit)
414 Chapter 22 Functions and commands
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