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Unformatted text preview: Answer : 2 (4 points ). ind d 2 dx 2 ln( e x + e-x ). Simplify your answer as much as possible. Answer : (over) Typeset using A M S-T E X. MATH 151 Assignment 5, p . 2 Autumn 2009 3 (3 points ). Use logarithmic diferentiation to Fnd d dx (1-sin x ) 3 x . Answer : 4 (2 points ). ind d dt ln 3 (1 + sin 2 t ). Answer : 5 (4 points ). How ast is the length o the shadow o a 200 oot tall clock tower decreasing when the angle o the elevation o the Sun is 30 and is increasing at 0 . 1 per minute. Answer : end...
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