Trig

How do you find the H-Shift.
My problem is y=5 sin(3x-pi/2).

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  1. Do you mean horizontal shift?

    Look at this:

    (3x-PI/2)= 3(x-PI/6)

    see the PI/6 term?

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    bobpursley
  2. Do you mean where does the function cross the x axis first after x = 0?
    If so it is when
    3x-pi/2 = 0
    or
    x = pi/6

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  3. yes I meant horizontal shift. so PI/6 is the answer?

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  4. Jennifer, graph it starting at x = 0 and go to x = pi/3
    see where it crosses the axis

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  5. then what's the ending point?

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  6. It is a sine function. It goes on and on forever. The shift is just how much it is offset from the origin by being sin(3x-pi/2) instead of being sin(3x)

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  7. never mind. I get it.

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  8. atta go :)

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