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OpenStudy (exoticinspirit):
Is my work correct? Find x when f(x)=1. (This means find the input that gives an output of 1.) f(x)=2/2+2=2/4=2/2=1
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Nnesha (nnesha):
y=input
x=output
Nnesha (nnesha):
what is f(x) function ?
OpenStudy (exoticinspirit):
f(x)= y
OpenStudy (exoticinspirit):
the function is 2/x+2
Nnesha (nnesha):
is it \[\frac{ 2 }{ x }+2 ~~\rm or \frac{ 2 }{ x+2 }\]
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OpenStudy (exoticinspirit):
the one after or (the second one)
Nnesha (nnesha):
okay cool
so \[\huge\rm f(x) = \frac{ 2 }{ x+2 }\]
f(x) =1 so substitute f(x) for 1 \[\rm 1=\frac{ 2 }{ x+2 }\] solve for x
OpenStudy (exoticinspirit):
!!OH Duh im finding x so i did it wrong right?
OpenStudy (exoticinspirit):
i said that x was 2 according to my calculations
Nnesha (nnesha):
yes right
i don't know why u replaced `x` with `2`
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OpenStudy (exoticinspirit):
x is 1
Nnesha (nnesha):
okay substitute x for 1 to check ur work \[\huge\rm 1=\frac{ 2 }{ \color{ReD}{1}+2 }\]
both sides are equal ?
OpenStudy (exoticinspirit):
NO
OpenStudy (exoticinspirit):
OHHHH OK SO THEY HAVE TO EQUAL THE SAME!!! THANK YOU SO MUCH IM NEW TO THIS
OpenStudy (exoticinspirit):
:di got it let me try another #
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Nnesha (nnesha):
so no x isn''t one
yes right you should check ur answer
if you get equal sides then yes one is right if both sides aren't equal then no
OpenStudy (exoticinspirit):
ok but there is one question where it says x=4 but when i plugged in 4 it wasnt equal
OpenStudy (exoticinspirit):
|dw:1441162289198:dw|
OpenStudy (exoticinspirit):
f(8) is not equal to 3 or 2/6
Nnesha (nnesha):
|dw:1441162547995:dw|
bot sides are equal ?
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