SOLUTION: hello, I have two questions 1) if 7^x=3 then x= 2) if t=e^x+2 then x= i was wondering how these work out? (^) means to the power thanks

Algebra ->  College  -> Linear Algebra -> SOLUTION: hello, I have two questions 1) if 7^x=3 then x= 2) if t=e^x+2 then x= i was wondering how these work out? (^) means to the power thanks      Log On


   

Question 30084: hello, I have two questions
1) if 7^x=3 then x=
2) if t=e^x+2 then x=
i was wondering how these work out? (^) means to the power
thanks
Answer by mukhopadhyay(490) About Me  (Show Source):
You can put this solution on YOUR website!
7^x=3
=>xlog7=log3
=>x=log7/log3;
t=e^x+2
=>(t-2)=e^x
=>x(ln e)=ln(t-2)
=>x=ln(t-2) (ln e=1)