Differentiate f(x) = (3x + 5)(4x - 7)
A good way to approach this question is to first expand the brackets . This gives 12x2 - 21x + 20x - 35 (remember to take the negative seven into account). We can then simplify this to give 12x2 - x - 35 . Finally, we use the standard rules for differentiation to give f'(x) = 24x - 1
AD
Related Maths A Level answers
All answers ▸How do you 'rationalise the denominator'?
Suppose that you go to a party where everyone knows at least one other person, you get a bit bored and wonder whether there are at least two people which know the same number of people there.
Differentiate y(x)=x^2 + 2x + 1, find the turning point and classify it as minimum or maximum.
integrate 5x^2 + x + 2 and find the value of c if the curve lies on the coordinates (1,3)