Differentiate: sin(x) + 2x^2

To tackle this problem, we will spilt the two terms given.

Firsly, we'll take the sin(x) by itself: d/dx (sinx) = cos(x) - where d/dx means the differential of what is inside the bracket.

  • This is a key differential that you should memorise or have already memorised. *

Next, we take the 2x^2: d/dx (2x^2) = 2*2x^1 = 4x - as x^1 is just x. - Again, this is a rule that you should memorise: multiply the number infront of the x by the power and then decrese the power by 1.

Therefore, your final answer should combine the two terms with the same symbol as shown in the question (in this case just '+' ):

So, we now have worked out that: d/dx (sin(x) + 2x^2) = cos(x) + 4x

And that's your final answer! Well done if you got that!

EL
Answered by Emma L. Maths tutor

3702 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

y = x^2 − 2*x − 24*sqrt(x) - i) find dy/dx ii) find d^2y/dx^2


What method should I use to differentiate equations with an x as the power of a number. E.g. 2^x


The weight in grams, of beans in a tin is normally distributed with mean U and S.D. 7.8, given that 10% conntain more than 225g a) Find U b) % of tins that contain more than 225 grams(A2 stats)


Surds question 3 - C1 2016 Edexcel


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning