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Program: TRIGGRAP
TRIGGRAP
- Finds the amplitude, period, shifts, and x- axis reflections for the graphs of trigonometric functions.
Useful for:
- ACT
- Precalculus
- Trigonometry
- Calculus
Example
Q: Find the amplitude, period, shifts, and reflections for the function:
Solution:
Run TRIGGRAP. How?
Choose 2 for 'cos(x)'
Enter these values:
A = 2, B = 3,
A = 2, B = 3,
C = -π, D = 4
The program reports
amplitude and period
information.
Press ENTER for more.
The program reports
shift information.
Interpretation:
Amplitude = 2
Period = 2π/3
Shift right by about
1.05 (which you need
to recognize is π/3)
Shift up 4
No reflection.
(It will report 'reflect
in x-axis' when
applicable, but does
not report reflections in the y-axis.)
