- #1

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The answer is +/- sqrt( [2-x/3] +1 ) + 1

I have no idea how to get that answer. I tried switching x and y and solving for x but I can't get the answer. TiA.

- Thread starter preet
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- #1

- 98

- 0

The answer is +/- sqrt( [2-x/3] +1 ) + 1

I have no idea how to get that answer. I tried switching x and y and solving for x but I can't get the answer. TiA.

- #2

- 609

- 0

use complete square.....

- #3

- 98

- 0

I get +/- sqrt(x-5/-3) +1

- #4

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If so,then solve for [itex]x=x(y) [/itex] from the equation

[tex]y=-3x^{2}+6x+2 [/tex]

Or you can complete the square...Correctly...

Daniel.

- #5

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- #6

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- #7

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you mean with "x" as in

[tex] y=-3(x-1)^{2}+5 [/tex]

Now solve for "x"...

Daniel.

[tex] y=-3(x-1)^{2}+5 [/tex]

Now solve for "x"...

Daniel.

- #8

HallsofIvy

Science Advisor

Homework Helper

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Set y= -3x

- #9

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... I see that it's the same now... I dont get why they're different though... I mean I could tack on +1 -1 etc. How was the textbook answer found... (just out of curiosity)?

TiA

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