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OpenStudy (anonymous):
Is this correct? Question: Write the equation of the line that represents the linear approximation to f(x) = sin(x) at pi/4. Estimate f(0.75) using linear approximation. My answer: a) y = cos(pi/4)(pi/4 - pi/4) + sqrt(2)/2 b) y = (sqrt(2)/2)(0.75 - pi/4) + sqrt(2)/2
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