Recent content by yurkler

  1. Y

    Derivative of the inverse of a function

    Homework Statement y=x+(1/x) at y=17/4 Homework Equations The Attempt at a Solution y^-1: x=y+(1/y) differentiate: 1=y'+ln(y)y' 1=y'(1+ln(y)) y'=1/(1+ln(y)) put that over 1: 1+ln(y) plug in y: 1+ln(17/4) =approximately 2.447
  2. Y

    I forgot how to factor cubic equations?

    the original equation is 4x^2-6x^2-12x+9=0 I got to this point: (2x^2)(2x-3)+(-3)(4x-3)=0