1.7.18 Chain rule (A-level only)

The point $P\,$ lies on the curve with equation $y=ex+1ex+3\displaystyle y = \frac{e^x+1}{e^x+3}$ with $x\,$ coordinate 0.

Find an equation to the normal to the curve at the point $P$ .

[6]

The point $P\,$ lies on the curve with equation $y=ex+1ex+3\displaystyle y = \frac{e^x+1}{e^x+3}$ with $x\,$ coordinate 0.

Find an equation to the normal to the curve at the point $P$ .

[6]

1.7.18 Chain rule (A-level only) Questions