In Exercises 77–82: a. Use power series to evaluate the limit. T b. Then use a grapher to support your calculation. 7 sin x 77. lim x-0 e2 – 1 e – e0 – 20 78. lim 0→0 0 – sin 0 (sin h)/h – cos h 79. lim 1-→0 \2 – 2 cos t 80. lim 1 - cos?z y2 81. lim z→0 In(1 82. lim y→0 Cos y – cosh y z) + sin z

Q: #47A-C

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Q: determine convergence or divergence using any method covered so far

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