Question

solve the logarithmic equation rounding to the nearest ten-thousandth
3 log 2x = 4

Answer 1

Divide both sides by 3 to start off

Answer 2

Which is it, a 4 or a 1?

Answer 3

Your original problem says 4 on the right side, but when you divided by 3 you said 1/3

Answer 4

you said divide both sides by 3

Answer 5

Right, you should have gotten

log 2x=4/3

Answer 6

Now, remember what we do to cancel the log?

Answer 7

not sure what i did wrong

Answer 8

How do we cancel the log?

Answer 9

divide by 4/3

Answer 10

No, what we did in the other problem....
remember

\[10^{\log 2x}=10^{4/3}\]

Answer 11

i keep forgetting that

Answer 12

Burn it into ya brain.

so now we have
\[2x=10^{4/3}\]
x=?

Answer 13

Solve it like any other equation and once you have x alone plug it into a calculator

\[x=10^{4/3}/2\]

Answer 14

Plugging that into a calc should give you 10.772

Answer 15

have a ti30x and not sure how to use it

Answer 16

Make sure you use parentheses

type it in like this

(10^(4/3))/2

Answer 17

Not sure whats wrong. Mine tells me 10.772

Answer 18

i got it missed the ( in front of 4

Answer 19

Not a problem