MYTUTOR SUBJECT ANSWERS

261 views

If y = (1+3x)^2, what is dy/dx?

A good approach to solve this is to use the chain rule of differentiation. The chain rule states: dy/dx= (dy/du)*(du/dx).

In this case let u = 1+3x, so y = u^2.

Then dy/du = 2u and du/dx = 3,

so dy/dx = (2u)*3 = (2(1+3x))*3 = 6+18x

Nishit B. A Level Maths tutor, GCSE Maths tutor, A Level Further Math...

7 months ago

Answered by Nishit, an A Level Maths tutor with MyTutor


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

182 SUBJECT SPECIALISTS

£20 /hr

Sarah R.

Degree: Physics (Bachelors) - Exeter University

Subjects offered: Maths, Physics+ 2 more

Maths
Physics
Economics
-Personal Statements-

“Hi! I'm Sarah and I'm a second year Physics student at the University of Exeter.  Maths and Physics have been a huge part of my education and general interests for a long time and I hope that I can pass on my knowledge and enthusiam t...”

£24 /hr

Daniel R.

Degree: Mathematics (Bachelors) - Durham University

Subjects offered: Maths, Physics+ 1 more

Maths
Physics
Further Mathematics

“About me I’m a first year student studying Maths with European Studies at Durham. I have recently taken my A levels, achieving A* in Maths and Further Maths, so I am familiar with the course content and what the examiners are looking ...”

£22 /hr

Chloe W.

Degree: Mathematics (Bachelors) - Bristol University

Subjects offered: Maths, Further Mathematics

Maths
Further Mathematics

“About Me:I'm Chloe and I'm a 2nd year maths student at Bristol university. I've always enjoyed working with numbers and I hope that I can encourage others to love working with them too!I've tutored both of my siblings through their...”

About the author

Nishit B.

Currently unavailable: for regular students

Degree: Engineering (Masters) - Oxford, New College University

Subjects offered: Maths, Physics+ 1 more

Maths
Physics
-Personal Statements-

“I am a second year Engineering undergraduate at the University of Oxford. I am happy to help with A-level/GCSE Maths.”

MyTutor guarantee

You may also like...

Other A Level Maths questions

What is the integral of x sin(x) dx?

What is the integral of ln(x)? Hint: use parts for this integration

How do I calculate the rate of change of something for which I don't have an equation?

How can we solve a two-equation, two-unknown values?

View A Level Maths tutors

Cookies:

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

mtw:mercury1:status:ok