Find an equation of the tangent line to the curve at the given point. y = x + tan(x) at (pi, pi)

asked Jul 2, 2017 178k views

2 votes

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6 votes

Differentiating :

y' = 1 + sec^2(x),

cosπ=−1

plug in pi = -1 ,for x:

1 + sec^2(pi) = 1 + (-1)^2
= 2

Chantal answered Jul 7, 2017

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