whats the function inverse for 2x-5

whats the function inverse for 2x-5
in Trigonometry Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Let y=2x-5, then 2x=y+5, x=½(y+5).

If y=f(x)=2x-5, then x=f-1(y)=½(y+5).

Since y is only a placeholder in the function:

f-1(x)=½(x+5) and is the inverse of 2x-5.

CHECK: f(f-1(x)) should be equal to x:

f(f-1(x))=f(½(x+5))=2(½(x+5))-5=x+5-5=x✔️

by Top Rated User (1.2m points)

Related questions

1 answer
inverse of a trig function
asked Dec 15, 2011 in Trigonometry Answers by anonymous | 1.4k views
2 answers
What is the inverse function of f(x)=2x-3?
asked May 10, 2013 in Algebra 2 Answers by anonymous | 860 views
1 answer
what is the inverse function of (2x)/(x-3)
asked Jan 29, 2013 in Calculus Answers by anonymous | 709 views
1 answer
What's the inverse of f(x)=x-1
asked Dec 15, 2015 in Algebra 2 Answers by Megan | 840 views
0 answers
for the inverse of variation function
asked Nov 21, 2011 in Algebra 2 Answers by anonymous | 850 views
1 answer
Find the inverse function of f(x)=3^x
asked Jul 15, 2017 in Other Math Topics by anonymous | 3.8k views
1 answer
which is the inverse of the function
asked Oct 14, 2014 in Algebra 2 Answers by anonymous | 701 views
1 answer
inverse function
asked Aug 20, 2014 in Other Math Topics by anonymous | 1.2k views
1 answer
Inverse of the function
asked Jun 20, 2014 in Other Math Topics by Zari | 1.2k views
1 answer
find the inverse function of n(x) = sqrt(2-x) -x
asked Oct 13, 2013 in Other Math Topics by anonymous | 817 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!

Most popular questions within the last 3000 days

  1. 50+50-25X0+2+2= (19)
  2. it takes 10 road workers 5 days to complete a road repair when working 2 hours a day.Working at the same pace,how many days will it take 2 people working 5 hours a day to finish it? (3)
  3. Solve 15 -1(12÷4+1)? (4)
  4. 8:4(5+2) (3)
  5. How can i represent 1/3; 3/3; 7/3; 10/3 and 15/3 on a number line? (1)

Most popular tags

87,516 questions
100,279 answers
2,420 comments
732,186 users