Is the function f(x)=x^3+24x+3 an increasing or decreasing function?
f(x)=x^3 +24x+3 f'(x)=3x2+24 Since x^2>0 for all real x 3x^2+24>0 So f(x) is an increasing function
DM
Related Maths A Level answers
All answers ▸A mass of 3kg rests on a rough plane inclined at 60 degrees to the horizontal. The coefficient of friction is 1/5. Find the force P acting parallel to the plane applied to the mass, in order to just prevent motion down the plane.
Find the sum of the first n odd numbers, 1+ 3 + … + 2n-1, in terms of n. What might a mathematician’s thought process be?
Integrate xcos(x) with respect to x
How will you simplify (3 xsquare root of 2) to the square?