Any help please?

Line 1: y = a^x + 1 , a>2

Line 2: y = a^(x+1), a>2

Prove that they intersect when x = loga(1/(a-1))

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- May 5th 2006, 12:48 AMkenjLogs
Any help please?

Line 1: y = a^x + 1 , a>2

Line 2: y = a^(x+1), a>2

Prove that they intersect when x = loga(1/(a-1)) - May 5th 2006, 02:53 AMCaptainBlackQuote:

Originally Posted by**kenj**

, and

intersect when:

so:

Rearranging:

,

rearranging:

so taking s to base :

RonL - May 5th 2006, 03:09 AMkenj
Sorry - got it ! It was easy once I realised that a^(x+1) is the same as aa^x