You are here:

Basic Math/pre-calculus

Advertisement

Expert: - 4/2/2009


Question
hi..im having trouble understanding my pre-calculus homework

if f(x)= the square root of 4-x^3
state whether the function f has an inverse.  if f -1 exists, find a rule for f -1(x) abd sgiw that f(f-1(x))=f-1(f(x))=X

Answer

Calculus
Bela,

Below are the four steps to be followed for finding inverse of a function:

1. Equate the function with 'y' i.e. y = f(x)
2. Interchange x's and y's
3. Solve the equation for 'y'
4. Set y = f-1(x)

Since it is not possible to write all these calculations on this page, I am attaching a file <calculus.jpg> with this answer. I have referred to above 4 steps in it. Kindly go through it. It will solve your problem.


Best wishes
Pawan

Pawan Musale

Expertise

I can answer Basic Mathematics questions like: Natural Numbers, Integers, Real Numbers, Complex Numbers, Number Theory, Geometry, Trigonometry, Graph Theory, Square Roots, Basic Integration, Profit-Loss problems, Work-Time problems, Equations etc I can try to answer questions of probability and set theory

Experience

Tutoring on allexperts.com since long time

Education/Credentials
I am Bachelor of Engineering (Instrumentation) from the reputed institute in India.

Awards and Honors
I was 18th in High School Scholarship examination in Maharashtra State of India. I was second in Mathematics in Maharashtra State in Secondary School Certificate examination.

©2012 About.com, a part of The New York Times Company. All rights reserved.