sakigirl
Find the inverse of..?



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sakigirl
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dw:1359613928022:dw

manishsatywali
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let y = \[\sqrt{x4}\]

manishsatywali
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square both the sides to get
y^2 =x4

jsolon7
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change the equation to \[x=\sqrt{y4}\] and solve for y

manishsatywali
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take 4 on the left side

sakigirl
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But the 4 is in the rt

manishsatywali
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u get y^2+4 = x

manishsatywali
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replace x by y and y by x u will get the inverse

jsolon7
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what he said

sakigirl
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Still a bit confused with what you do with the 4

manishsatywali
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i have added +4 on both sides so that 4 gets cancel on the right hand side

sakigirl
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So I get 4+x=sqrt y

manishsatywali
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dw:1359614352269:dw....follow this

manishsatywali
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after this cancel 4 and +4 on right hand side

sakigirl
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@manishsatywali Thank you :)

manishsatywali
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alwaz welcum