Please explain any one of them in detail? Thanks!

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1 Answer
Jun 2, 2018

Choice 1, pi/2 to {5pi}/2

Explanation:

As math has gone online the quality has really suffered. No real math editor would commit an italic s text{} ec to print.

We seek two periods of y = 1/2 sec (2x - pi) . The period of sec x is of course 2pi and the factor of two on x means the period of our function is pi. So if we want two cycles, we need x to range over 2pi.

Let's look at our choices. The first one has the correct interval size.

Let's try it in the Socratic cancel{text{crasher}} grapher. pi/2 approx 1.7 and {5pi}/2 approx 7.9. Looks like two periods. quad sqrt

graph{y = 1/2 sec (2x - pi) [1.7, 7.85, -2.5, 2.5]}