Question

solve ln2 + lnx = 5

Answer 1

it's actually Ln not in

Answer 2

oh oops

Answer 3

Ln(2) + Ln(x) = 5

Ln(2x) = 5 .. use the rule that Ln(x) + Ln(y) = Ln(xy)

2x = e^5 ... convert to exponential form

x = (1/2)*e^5 multiply both sides by 1/2 to isolate x

Answer 4

use the logarithmic laws - when you add logs you just multiply whatever is inside - ln 2 + ln x = ln (2*x).
so ln(2x) = 5
raise both sides to the power of e
e^(ln(2x)) = e^5
this thing above = 2x since e power and ln cancel out
so 2x = e^5
x = (e^5) /2

Answer 5

thanks!!!

Answer 6

np

Answer 7

so what do i put as a final answer

Answer 8

2x = e^5
2x = 148.41
x=148.41/2
x = 74.205

Answer 9

thanks
:)

Answer 10

Anytime.