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Posted by on Thursday, October 30, 2008 at 10:58pm.

Suppose a curve is traced by the parametric equations
x=1sin(t)
y=18-3cos^2(t)-4sin(t)
At what point (x,y) on this curve is the tangent line horizontal?

  • calc - , Thursday, October 30, 2008 at 11:06pm

    When dy/dx = (dy/dt)/(dx/dt) = 0

    Do the calculation and first find the value of t. Use that co calculate x and y

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