For some constants a and b, find the derivative of (x − a) (x − b)

Question

Philoid · Accepted Answer

Let f(x) = (x – a)(x – b)

⇒ f(x) = x² – (a + b)x + ab

Since,

f’(x) = 2x – (a + b) + 0

= 2x – a – b

∴ f’(x) = 2x – a – b

For some constants a and b, find the derivative of(x − a) (x − b)