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OpenStudy (anonymous):
!!
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OpenStudy (welshfella):
dy/dx = dy/dt * dt/dx
OpenStudy (welshfella):
dt /dx = 1 / dx/dt = 1/3
OpenStudy (welshfella):
and can you find dy/dx from y = 3x^3 - 2x ?
OpenStudy (anonymous):
9x^2-2?
OpenStudy (welshfella):
right x = -2 so we have 9(-2)^2 - 2 = dy/dt * 1/3 34 = dy/dt / 3 dy/dt = ?
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OpenStudy (welshfella):
cross multiply
OpenStudy (anonymous):
102?
OpenStudy (welshfella):
right
OpenStudy (anonymous):
Thank you!!!
OpenStudy (welshfella):
yw
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