1. Prove that cosh² × cos²x - sinh² × sinh²x = 1/2 (1 + cosh² × cos²x).
2. Solve the equation tanhx + 4sechx = 4.
3. lt tanx - sinx/x³, Evaluate the limit.
x - 0?
In Mathematics
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Asked by AlongeEmmanuel on 18th November, 2020
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