## Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.

## Question

secondary 4 | A Maths

** One Answer Below **

Anyone can contribute an answer, even non-tutors.

**Answer This Question**

Need help in this question:(

This normal is a straight line that cuts through the tangent of point P perpendicularly. You have the gradient of this line (inverse of the gradient of tangent at P) and the coordinates of point P itself. Substitute into y-mx+c to get the whole equation.

By substituting y=0, you can get the coordinates of Q.

You have the dy/dx equation. From there, you can integrate to get the equation of the curve (y and x). Substitute point P to get the value of C. You now have the equation of the curve

### See 1 Answer

*done*{{ upvoteCount }} Upvotes

*clear*{{ downvoteCount * -1 }} Downvotes

a) Normal of a point

b) Integrating via substitution method

If you have any questions, please do contact me! :)