Differentiate the following: 5x^3 + 4x^2 + 3x + 2
dy/dx = 15x^2 + 8x + 3
Differentiation was often a question my peers struggled with at gcse and although not necessairly a dominating topic of the syllabus, I found it is an easy way to pick up marks if understood properly.
To arrive at the answer, there are 4 steps: 1) multiply the 5 by the indicie (3) and then subtract one from the indicie. 2) Same principle, multiply the 4 by 2, then subtract one from the 2. 3) As there is no indicie, just take the figure in front of the x. 4) as there is no x term, we remove it altogether.
CG
Related Maths GCSE answers
All answers ▸How do I solve a quadratic equation by completing the square?
How do I know which out of the Sine and Cosine rule I should use?
Sarah used to earn 80£ per week, however she was given a 5% pay rise, what are her weekly earnings now?
Amber has an unfair coin. The probability of throwing a tail is p. Amber throws the coin twice and the probability of throwing a head and then a tail is 6/25. Heads are more likely than tails. Show that 25p^2-25p+6=0 and find the value of p.