no_trig_fun
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no_trig_fun
Description
This is a standard function evalutor which does not allow the trig functions sin, cos, tan, sec, csc, cot in the answer.
Syntax
no_trig_fun(ans_string)
Params
ans_string: A string which evaluates to a function
Action
Produces an answer evaluator which checks student's answer as a function. Student's answer cannot contain one of the trig functions.
Returns
an answer evaluator
