`y = (1/2)csc(2x), ((pi/4),(1/2))` Find and evaluate the derivative of the function at the given point.

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hkj1385 eNotes educator| Certified Educator

`y = (1/2)*cosec(2x)`

`y' = -(1/2)*2*cosec(2x)*cot(2x)`

  • Putting x = pi/4 

`y' = -1*cosec(pi/2)*cot(pi/2) = -1*1*0 = 0`

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