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junior college 1 | H2 Maths
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junior college 1 chevron_right H2 Maths chevron_right Singapore

Hi can someone solve question e for me please.I just started h2 math so it's a bit new

Date Posted: 11 months ago
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Eric Nicholas K
Eric Nicholas K's answer
4393 answers (Tutor Details)
y is a function of x, so we must also treat 'y' as a chain.

Differentiating with respect to x,

x3 --> 3x2
x4 --> 4x3
x5 --> 5x4 and so on
y3 --> 3y2 times dy/dx
y4 --> 4y3 times dy/dx
y5 --> 5y4 times dy/dx

where 'y' is the chain and using chain rule, we have to add a 'd/dx (y) at the back which is simply dy/dx as I have put above.