Question

f(x)= 7^x logbase3 (x) I need to find the derivative .... but I can only enter the answer using change of base - can anyone provide direction? Thanks

Answer 1

Is it correct

Answer 2

\[7^x \log_3(x)\]

Answer 3

\[d/dx \log(x)=1/xln(b)\]

Answer 4

scratch that

Answer 5

\[d/dx \log_b(x)=1/xln(b)\]

Answer 6

So you will use product rule

Answer 7

any question?

Answer 8

ok I see that and I am kinda clear - in that eq. where is the 7^x
ah..1/7ln3

Answer 9

3ln(x)=1/7ln3

Answer 10

How is going so far?

Answer 11

is it...? [(1\7ln 3(x)) -(3\ln (x))]

Answer 12

\[d/dx (7^x)=\ln (7)*7^x\]

Answer 13

product rule is
u*v'+v*u'

Answer 14

my computer died. I am back and will try again. Thank you
now I'm guest.... this is 1477

Answer 15

haven't quite got there but I have to go now. thank you so much for your help!!!