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 ▸What are volumes of revolution and how are they calculated?
Does the equation x^2 + 2x + 5 = 0 have any real roots?
Find the derivative of f(x)= ln(|sin(x)|). Given that f(x) has a value for all x, state why the modulus is required.
A stone, of mass m, falls vertically downwards under gravity through still water. At time t, the stone has speed v and it experiences a resistance force of magnitude lmv, where l is a constant.