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Determine an equation for the tangent to each function at the point with the given x-coordinate....

Determine an equation for the tangent to each function at the point with the given x-coordinate.

a) f(x) = tanx , x = π/4 b) f(x) = 6tanx - tan2x, x = 0

Doing limits using the formula

y = tanx --> dy/dx = sec^2x

Math   Calculus   
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