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8. a. Prove that f(x) = cos x is continuous on R. b. If ECR and...


8. a. Prove that f(x) = cos x is continuous on R. b. If ECR and f: E R is continuous on E, prove that 8(x) = cos (f(x)) is co
8. a. Prove that f(x) = cos x is continuous on R. b. If ECR and f: E R is continuous on E, prove that 8(x) = cos (f(x)) is continuous on E. 9. For each of the following equations, determine the largest subset E of R such that the given equation
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9. Let frm)= lasn Let acR, to show f is (ntmos ad a. So (mider 1Ha)-fu) - 1 (usca)-les(a) Sin() Sin -2 Sin (agy. Sin (a ) Use

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8. a. Prove that f(x) = cos x is continuous on R. b. If ECR and...
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