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17 votes
17 votes
Need help finding the equation. getting 1-2sin(x) as derivative. Then plugging in pi/2 but don't know what to do from there.

Need it in this form. y-y1=m(x-x1)

Need help finding the equation. getting 1-2sin(x) as derivative. Then plugging in-example-1
User Jared Reeves
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1 Answer

23 votes
23 votes

Answer:

y - pi/2 = -1(x - pi/2)

Step-by-step explanation:

g'(x) = 1 -2sinx

g'(pi/2) = 1 - 2sin(pi/2) = 1 - 2(1) = -1

g(pi/2) = pi/2 + 2cos(pi/2) = pi/2

y - pi/2 = -1(x - pi/2)

User Kinbiko
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3.7k points