I am really confused, can someone please help! Use the Linear Approximation to e

Question

I am really confused, can someone please help!

Use the Linear Approximation to estimate Deltaf = f(l.l) - f(l) for f(x) = ln(x9 + 21). (Round your answer to six decimal places.) Estimate the actual change. (Round your answer to six decimal places.) Compute the error in the Linear Approximation. (Round your answer to six decimal places.) Compute the percentage error in the Linear Approximation. (Round your answer to two decimal places.) Use Linear Approximation to estimate Deltaf for f(x) = 7/2+x2 when a = 2 and Deltax = -1/2. (Round your answer to three decimal places.) Compute the error in the Linear Approximation. (Round your answer to five decimal places.) Compute the percentage error in the Linear Approximation. (Round your answer to two decimal places.) The resistance R of a copper wire at temperature T = 30degree C is R = 20 H. Estimate the resistance at T = 36degree C, assuming that (Round your answer to two decimal places.)

Explanation / Answer

f(x) = ln(x^9 + 21)    goes to delta f = ln(1.1^9 + 21) - ln(1+21) = 0.0598949

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