Kahwai's answer to universe's Secondary 4 A Maths Singapore question.
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You may use quotient rule but I prefer product rule so make exp(x) becomes exp(-x)
Then differentiate and exp(-x) will never be zero only -sin(x)= cos(x)
And the rest you would do it
Then differentiate and exp(-x) will never be zero only -sin(x)= cos(x)
And the rest you would do it
Date Posted:
3 years ago
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