Leaving Cert Higher Level Maths 2021 Question 5

Question 5 from the leaving cert higher level maths 2021 paper 1 is a differentiation question. It starts with a straightforward derivative which is to be given in completed square form. Then there is a simple inequality of two derivatives and finally a trigonometric derivative.

[@ChloE123omega]

Thank you so much this was really helpful 🙏🏾

[@jessicalovett6708]

In the last part, why is the derivative when x is pi/6 equal to the slope?

[@drewjames7015]

When u gonna cover the rest ?