The function f(x)=ln x is transformed into the equation f(x) = 4 ln x.  Select the transformation that occurred.

jbouyer  Dec 8, 2017

Vertical stretch by a factor of 4


Translating right or left we would have to have  y  = ln ( x ± b)


Translating up or down we would have to have   y = ln (x) ± c


A vertical stretch (or vertical compression )  has the form  y  =  a * ln (x)


Here,  "a"  = 4


cool cool cool

CPhill  Dec 8, 2017
edited by CPhill  Dec 8, 2017

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