Find an equation of the tangent line to the curve at the given point. y = x + tan(x) at (pi, pi)
1 answer:
<span>Differentiating :
y' = 1 + sec^2(x),
</span><span>
cosπ=−1</span><span>
plug in pi = -1 ,for x:
1 + sec^2(pi) = 1 + (-1)^2
= 2</span>
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