The point K K\,K lies on the curve with equation y=3ex+1ex+1\displaystyle y = \frac{3e^x+1}{e^x+1}y=ex+13ex+1 with xxx-coordinate 0.
Find an equation of the normal to the curve at the point KKK.
333 exam-style questions on WJEC A Level Maths 3.6 Differentiation (A-level only), covering 3.6.1 Differentiation (A-level only), 3.6.2 Differentiation (A-level only), 3.6.3 Differentiation (A-level only), 3.6.4 Differentiation (A-level only), 3.6.5 Differentiation (A-level only), 3.6.6 Differentiation (A-level only), 3.6.7 Differentiation (A-level only), and 3.6 Differentiation (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.