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If and then is equal to:
If $y = t^2$ and $t = x + 3$ then $\frac{dy}{dx}$ is equal to:
- (a)$(x + 3)^2$
- (b)$2(x + 3)$
- (c)$2t$
- (d)$2(x + 3)^2$
Answer
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From ISC 2022 Specimen Mathematics Paper 1, question 13.