Question
How can I show that the function F (x)= the integral from 2x to 5x of 1/ t dt is constant on the interval (0, +∞).
Answers
bobpursley
INT (1/t)dt=lnt over limits
= ln 5x -ln 2x= ln(5x/2x)=ln (2.5)
= ln 5x -ln 2x= ln(5x/2x)=ln (2.5)