Let , for x>0.
Find .
Find .
Solve .
EduNinjaLet f(x)=lnx−5x, for x>0.
Find f′(x).
Find f′′(x).
Solve f′(x)=f′′(x).
Consider the function f(x)=x2+x+x50,x=0.
Find the coordinates of A.
Find ∫(6x+7)dx.
Given f′(x)=6x+7 and f(1.2)=7.32, find f(x).
Consider the function defined by f(x)=x2−8x. The graph of f passes through the point A(3,-15).
Find the gradient of the tangent to the graph of f at the point A .
Write down the equation of the normal to the graph of f at point A .
The normal to the graph of f at point A intersects the graph of f again at a second point B .
Find the coordinates of B.
Consider the function f(x)=x(x−1)2, where x∈R,x=0.
Hence, find ∫f(x)dx.
Consider the function f(x)=x3+5x2−8, where x∈R.
Find f′(1).
Find the equation of the tangent to the graph of f at x=1.
Let f(x)=ex6x2−4, for 0≤x≤7.
The graph of f has a maximum at the point A . Write down the coordinates of A .
Let f(x)=6x2−3x. The graph of f is shown in the following diagram.

Find ∫(6x2−3x)dx.
Find the area of the region enclosed by the graph of f, the x-axis and the lines x=1 and x=2.
The derivative of a function g is given by g′(x)=3x2+5ex, where x∈R. The graph of g passes through the point (0,4). Find g(x).
Hence, find the value of ∫19(x3x−5)dx.