Find an Equation of the Tangent to the Curve $y = 2 \sin ^ { 2 } x \text { at } x = \frac { \pi } { 4 }$

question 78

Essay

Find an equation of the tangent to the curve $y = 2 \sin ^ { 2 } x \text { at } x = \frac { \pi } { 4 }$

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