Differentiate y=ln(2x^2) with respect to x

Making a substitution for u = 2x^2 Now y = ln(u) dy/dx = du/dx * dy/du du/dx = 4x dy/du = 1/u dy/dx = 4x/u Then substitute 2x^2 back in as u The final answer is 4x/(2x^2) Which can be simplified by dividing through by 2 and x to get 2/x

CG

Related Maths A Level answers

All answers ▸

Find the value of: d/dx(x^2*sin(x))


Express 3sin(2x) + 5cos(2x) in the form Rsin(2x+a), R>0 0<a<pi/2


Find the coefficient of the x^2 term in in the expansion of (1+x)^4.


Show that 1+cot^2(x)=cosec^2(x)