Eric Nicholas K's answer to Kathy's Secondary 4 A Maths Singapore question.
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Q3a to Q3e
One more thing. We must do the differentiation first BEFORE substituting the value for x. Never the other way round, because if you substitute the value for x first, you will obtain a numeral for y, which differentiates to 0 when differentiated with respect to x.
One more thing. We must do the differentiation first BEFORE substituting the value for x. Never the other way round, because if you substitute the value for x first, you will obtain a numeral for y, which differentiates to 0 when differentiated with respect to x.
Date Posted:
4 years ago
For part c how u get 6?
Part e how u get when y=5?
From the question
Ok. I didn’t saw it
I post qns
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