Express 21/root7 in the form k root7.

21/root 7 = 21root7/7 = 3root7

k = 3

AW

Related Maths A Level answers

All answers ▸

Find the second derivate d^2y/dx^2 when y = x^6 + sqrt(x).


How would I differentiate a function of the form y=(f(x))^n?


If f(x) = sin(2x)/(x^2) find f'(x)


How do you find the possible values of cos(x) from 5cos^2(x) - cos(x) = sin^2(x)?