Please can someone help with this problem: solve Now we were told to let y=2 but I can't figure out where the y is coming from? Is it just as a function of x?

Thanks in advance for your help!

Kris

Results 1 to 7 of 7

- Mar 9th 2013, 11:39 AM #1

- Joined
- Oct 2012
- From
- England
- Posts
- 25

## Log question

Please can someone help with this problem: solve Now we were told to let y=2 but I can't figure out where the y is coming from? Is it just as a function of x?

Thanks in advance for your help!

Kris

- Mar 9th 2013, 11:55 AM #2

- Joined
- Oct 2012
- From
- Ireland
- Posts
- 751
- Thanks
- 533

## Re: Log question

You might have misread your book and it is telling you to make the substitution y=2

^{x}

If not, do that substitution anyway and solve for y, after you have solved for y then finish by using it to find x

Hint: 2^{2x+1}=2(2^{x})^{2 }Edit: Beat plato by 1 minute :P

- Mar 9th 2013, 11:56 AM #3

- Mar 9th 2013, 12:02 PM #4

- Joined
- Oct 2012
- From
- England
- Posts
- 25

## Re: Log question

- Mar 9th 2013, 12:15 PM #5

- Joined
- Oct 2012
- From
- England
- Posts
- 25

- Mar 9th 2013, 02:17 PM #6

- Joined
- May 2006
- From
- Lexington, MA (USA)
- Posts
- 12,028
- Thanks
- 848

- Mar 9th 2013, 02:53 PM #7

- Joined
- Oct 2012
- From
- England
- Posts
- 25