1. Given that 2^a = 3^b = 18^c, Show that ab=c(b+2a).
2. Given that p^1/2 - p^(-1/2) = 2, Show that p + p^(-1) = 6
Okay, for the next one, I'm not sure if this is the right method, but it's quite long.
[From here, we know that ]
Divide by ln(2)
We consider only the centre and right parts now and used what we found a little earlier to remove the natural logs.
Can you continue now?