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Evaluate the following limits when they exist. tanx-x 1. limx-o 73 2. limx-o(cscx - cotx) 3. lim - (1 + -)bx or lim -(1 + -)x [Only one of them] x X 4. limx-0+ (= 1 x ex-1 cos x 5. lim 2 (x-- 3