A curve has the equation: x^2(4+y) - 2y^2 = 0 Find an expression for dy/dx in terms of x and y.

First of all expand the brackets in the equation. Then you can differentiate each term with respect to x. As one of the terms will be a product of x and y the product rule must be used to find the differential of that term. The key to these types of questions is that the differential of y with respect to x is dy/dx. This means that after differentiating each of the terms you will have an expression in terms of dy/dx, x and y. All you have to do from that point on wards is gather the terms with the dy/dx on one side to find an expression for dy/dx.After expanding the brackets:4x2 + x2y - 2y2 = 0After differentiating each term:8x + 2xy + x2(dy/dx) - 4y(dy/dx) = 0After rearranging to make (dy/dx) the subject:dy/dx = (8x+2xy)/(4y-x2)

CM
Answered by Carlotta M. Maths tutor

3761 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

In a geometric series, the first and fourth terms are 2048 and 256 respectively. Calculate r, the common ratio of the terms. The sum of the first n terms is 4092. Calculate the value of n.


How do you find the point of intersection of two vector lines?


An object of mass 2kg is placed on a smooth plane which is inclined at an angle of 30 degrees from the ground. Calculate the acceleration of the object.


What is [(x+1)/(3x^(2)-3)] - [1/(3x+1)] in its simplest form?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences