RS Aggarwal - Mathematics

Book: RS Aggarwal - Mathematics

Chapter: 3. Functions

Subject: Maths - Class 11th

Q. No. 7 of Exercise 3F

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7

Let f : R+ R : f(x) = loge x. Find {x : f(x) = –2}.

Given, f : R+ R : f(x) = loge x


f(x) = -2


loge x = -2


Taking antilog on both sides


x =


Hence , the value of x for which f(x) = -2 is .


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