The inverse of f(x)=3x-2 is f^-1(x)=(x+2)/3
Now, for an English translation.
The math symbol for "the inverse of f(x)" is the
symbol f^-1(x). Please note that this is NOT 1/f(x).
Now, how to get (x+2)/3
Since y=f(x), I"m going to write y=3x-2
To get the inverse, simply swap places for x and y,
then solve for y.
From f(x)=y=3x-2), we do the swap to get
x=3y-2
3y=x+2
y=(x+2)/3
And that, sir, is your f^-1(x). Works every time.
2007-10-12 12:33:16
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answer #1
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answered by Grampedo 7
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F^-1(x) = (x+2)/3
2007-10-12 12:21:59
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answer #2
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answered by Anonymous
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y=3x-2
3x=y+2
x=(y+2)/3 is the inverse function
2007-10-12 12:26:14
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answer #3
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answered by cidyah 7
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(x+2)/3
2007-10-12 12:21:32
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answer #4
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answered by Anonymous
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ummm do u recommend via potential of inversing y = x^(2) ? lols ok, via potential of inversing it, replace y into x, & x into y i.e: x = y^(2) making looking the eqn of y = ~~~~~~~~~~ sq. root (x) = y as a effect y = (+ or -)x^(0.5)
2016-12-29 06:57:01
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answer #5
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answered by jensvold 3
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------f ---->
x------>(3x - 2) = y
<----g-----
x<--------y
g(y) = x
y = 3x - 2
3x = y + 2
x = (y + 2) / 3
g(y) = (y + 2) / 3
Thus inverse is
f^(-1) (x) = (x + 2) / 3
2007-10-16 06:39:36
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answer #6
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answered by Como 7
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f(x) = 3x - 2
x = 3f-1(x) - 2
x + 2 = 3f-1(x)
(x+2)/3 = f-1(x)
f-1(x) = (x+2)/3
2007-10-12 12:21:23
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answer #7
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answered by UnknownD 6
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f(x)=3x-2
y=3x-2
For finding f^-1(x),swap x &y
x=3y-2
or x+2=3y
or y =(x+2)/3
or f^-1(x)=(x+2)/3 ans
2007-10-12 12:59:46
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answer #8
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answered by MAHAANIM07 4
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