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Mathematics 27 Online

OpenStudy (anonymous):

please helppp mee transformation y=sinx to y=-2sin(3x-⫪/4)+2 can someone explain why it would be a horizontal shrink by 1/3 vs horizontal shrink by 3

13 years ago

OpenStudy (mertsj):

Because the coefficient of x = 2pi/period so 3=2pi/period so 3(period) = 2pi and the period = 2/3 pi instead of the normal 2pi

13 years ago

OpenStudy (anonymous):

okay so f it was like (1/3 x - ⫪/4) then the answer would be a horizontal stretch by 3 ?

13 years ago

OpenStudy (mertsj):

you would plug the coefficient of x into the equation I gave you and solve. coefficient of x = 2pi/period

13 years ago

OpenStudy (mertsj):

1/3=2pi/period

13 years ago

OpenStudy (anonymous):

to be honest i have no idea where you got that equation lol

13 years ago

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