Lemma
DeepApplications of derivatives
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §3.1 Linear Approximation, #31 · Calculus · Applications of derivatives

Enter 0.9 on your calculator and press the square root key 4…

Enter 0.9 on your calculator and press the square root key 4 times. Predict what will appear the fifth time and press again. You now have the \_\_\_\_\_ root of 0.9. How many decimals agree with ?

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §3.1 Linear Approximation, #31

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