MYTUTOR SUBJECT ANSWERS

576 views

Find dy/dx when y = x^2(cos(x)).

y = x2(cos(x)) therefore we will need to use the product rule, 

dy/dx = u dv/dx + v du/dx

where u = x2 and v = cos(x)

du/dx = 2x and dv/dx = - sin(x), (don't forget the negative symbol when differentiating cosine)

dy/dx = x2(- sin(x)) + cos(x)(2x)

dy/dx = 2x(cos(x)) - x2(sin(x))

Joseff S. A Level Maths tutor, GCSE Maths tutor, A Level Physics tuto...

1 year ago

Answered by Joseff, an A Level Maths tutor with MyTutor


Still stuck? Get one-to-one help from a personally interviewed subject specialist

323 SUBJECT SPECIALISTS

£26 /hr

Scott R.

Degree: PGCE Secondary Mathematics (Other) - Leeds University

Subjects offered:Maths, Further Mathematics

Maths
Further Mathematics

“I am currently completing 2 PGCEs in Leeds. I have always had a passion for maths and my objective is to help as many as possible reach their full potential.”

£20 /hr

Praveenaa K.

Degree: Mathematics (Masters) - Bristol University

Subjects offered:Maths, Science+ 4 more

Maths
Science
Further Mathematics
English
Chemistry
-Personal Statements-

“Top tutor from the renowned Russell university group, ready to help you improve your grades.”

PremiumTimothy N. A Level Design & Technology tutor, GCSE Design & Technolog...
£36 /hr

Timothy N.

Degree: Architecture and Environmental Engineering (Masters) - Nottingham University

Subjects offered:Maths, Physics+ 2 more

Maths
Physics
Design & Technology
-Personal Statements-

“Hi there, I have a passion for helping students achieve, and believe that with my 200+ hours of experience, we will be able to surpass the grades you want!”

About the author

Joseff S. A Level Maths tutor, GCSE Maths tutor, A Level Physics tuto...

Joseff S.

Currently unavailable: for regular students

Degree: Civil Engineering (Bachelors) - Bristol University

Subjects offered:Maths, Physics

Maths
Physics

“Hi my name's Joe, I'm from Cardiff originally and I study Civil Engineering at the University of Bristol, I've just completed my 3rd year and I'm hoping to make a change and study Computer Science.  I went to a welsh speaking school s...”

MyTutor guarantee

You may also like...

Posts by Joseff

Calculate the largest share when £400 is shared in the ratio 1 : 2 : 5.

Calculate the value of 2^(–3) as a fraction in its simplest form.

Find dy/dx when y = x^2(cos(x)).

Other A Level Maths questions

Differentiate the function y=(6x-1)^7

The polynomial p(x) is given by p(x) = x^3 – 5x^2 – 8x + 48 (a) (i) Use the Factor Theorem to show that x + 3 is a factor of p(x). [2 marks] (ii) Express p(x) as a product of three linear factors. [3 marks]

How do you differentiate X to the power of a?

Given that y = 4x^3 – 5/(x^2) , x not equal to 0, find in their simplest form (a) dy/dx, and (b) integral of y with respect to x.

View A Level Maths tutors

We use cookies to improve your site experience. By continuing to use this website, we'll assume that you're OK with this. Dismiss

mtw:mercury1:status:ok