Eric Nicholas K's answer to Sonia's Secondary 4 A Maths Singapore question.
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Hi Sonia! Beware of the phrasing for part ii.
“The gradient is a minimum” is not referring to the minimum point of the curve!
It’s referring to the minimum of the gradient, not the curve, so the derivative of the gradient is the one which equals zero i.e. d2y/dx2 = 0.
“The gradient is a minimum” is not referring to the minimum point of the curve!
It’s referring to the minimum of the gradient, not the curve, so the derivative of the gradient is the one which equals zero i.e. d2y/dx2 = 0.
Date Posted:
5 years ago
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