sin°(2x) lim tan°(4x) 3 UIS 3

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A: To integrate the given functions.

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A: When we try to find cot0° in calculator, Its will show ERROR.

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A: Given limit is We know that sec(2x)=1/cos(2x) and tan(2x)=sin(2x)/cos(2x), therefore , we have

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Q: Problem 1. (a) Show that that 1 – tanh² x = sech² x and use it to prove that sech(tanh x) = v1 – x².

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