• Answer of this question

    How dt/dx=3/x^4 come? In chapter 7 example 38
    Davneet Singh's image
    Davneet Singh

    Hello Kriti

    t = 1 - 1/x

    t = 1 - x-3 

     

    Differentiating with respect to x

    dt/dx = d(1)/dx - d(x-3)/dx

    dt/dx = 0 - (-3)x-3 - 1

     

    dt/dx = 3x-4 

    dt/dx = 3/x4 

     


    Written on Sept. 22, 2017, 12:50 p.m.