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Using the tangent line approximation of √x near 25, √25.2 is about
A5.2
B5.04
C5.002
D5.02
Answer & Solution
Correct answer: D. 5.02
With slope 1/(2√25) = 0.1 and a step of 0.2, the estimate is 5 + 0.02 = 5.02.
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