Question

Solve equation please help

2-3e^(.4x)=-7

Answer 1

so like first step add to both sides (-2) and will get ...?

can you calcule it ?

Answer 2

-3e^(.4x)=-9

Answer 3

ok

what you can doing now ?

Answer 4

Divide by -3


e^(.4x)=3

Answer 5

ok

and now ? to solve it for x you need us logarithm like ,,ln" because ,,ln" has the base of ,,e"

Answer 6

so than will be ...?

Answer 7

do you understand it ?

Answer 8

Am I supposed to use change of base property?

Answer 9

why ?

so this will be :


ln e^(4x) =ln 3

Answer 10

continue it please

Answer 11

I don't know what to do next.

Answer 12

4xln e =ln 3

4x= (ln 3 / ln e) so but you know that the natural logarithm has a base of e abd you know again that log(a) a =1

than this mean that ln e =1

ok ?

Answer 13

Ok

Answer 14

than will get

4x=ln 3

x=(ln 3)/4

right ?

Answer 15

do you understand it sure ?

Answer 16

Yes sir thank you.

Answer 17

ok

good luck

bye

was my pleasure

Answer 18

@precal

Answer 19

so change of base for ??? why ?