Posted by Christian on Monday, September 12, 2011 at 8:39pm.
Determine whether the following statement makes sense or does not make sense, and explain your reasoning (modified from true/false format of text): If
f(x) = 3x, then f^1 (x) = 1/3x
A) This makes sense because the inverse would divide by 3 to "undo" the multiplication by 3 in f(x).
B) This does not make sense because although we would divide by 3 to "undo" the multiplication by 3 in f(x), the x would appear in the numerator not the denominator.

Math (Ms. Sue Please Help)  bobpursley, Monday, September 12, 2011 at 8:44pm
You have to be careful with the term inverse funtion.That is not the same as reciprocal.
if f(x)=3x=y
then the inverse can be found this way:
y=3x
x=3y
y=x/3 or f^1(x)=x/3
check: inverse(function)must equal x
so f^1 (f)= 3(x/3)=x so in fact it is the inverse.
So false. Go with B. When dealing with functions, the term "inverse" seldom means reciprocal.

math  Christian, Monday, September 12, 2011 at 8:44pm
Please help HM

Math  Christian, Monday, September 12, 2011 at 8:50pm
are u sure about this

Math (Ms. Sue Please Help)  Ms. Sue, Monday, September 12, 2011 at 8:53pm
Christian  Bobpursley is a math/physics/teacher. HM is probably a high school student.

Math (Ms. Sue Please Help)  bobpursley, Monday, September 12, 2011 at 8:54pm
Yes, Christian. But don't trust me. http://www.youtube.com/watch?v=Ec5YYVxyq44 That is the same message.
Answer This Question
Related Questions
 Algebra (please help)  Determine whether the following statement makes sense or...
 Math  Determine whether the following statement makes sense or does not make ...
 Math  Determine whether the following statement makes sense or does not make ...
 math  The lengths in inches (x and y) of two fish are related by the equation ...
 english  The neighbors and ______ shared the cost of the storage rental. Which ...
 algbra  heyya Your equation makes no sense. Your equation makes no sense. 4x = ...
 Math  1. Write the converse of the following true conditional statement. if the...
 Physics  Specifically, which of the following best expresses your view: i. Many...
 Physics  Specifically, which of the following best expresses your view: i. Many...
 Physics  Specifically, which of the following best expresses your view: i. Many...
More Related Questions