Question

Are my answers right?

Answer 1

except for the 1st one
all are correct

Answer 2

First one looks odd

Answer 3

Oh, Bat-san. Why do you think so?

Answer 4

thats because ,
\(\sqrt{stuff}=(stuff)^{(1/2)}\)
you only put the exponent 1/2 for A
it must be for ln A

Answer 5

I see. Are you sure all the other ones are right by the way? Just making sure.

Answer 6

yes, i am sure that others are correct :)

Answer 7

Okey dokey, thanks again!

Answer 8

oh wait!

Answer 9

the 2nd last one....

Answer 10

is also incorrect
just noticed :P

Answer 11

I see why. Because when you pass it it should be multiplying, right?

Answer 12

no, because
\(\Large \log A-\log B= \log(\dfrac{A}{B})\)
and not what is shown

Answer 13

you simply cannot simplify logA/logB

Answer 14

what about the third last one?

Answer 15

omg, i should be more alert! -_-
3rd last is also incorrect.

Answer 16

:P

Answer 17

sorry @Yondaime

Answer 18

\[\log _{b}(mn) = \log _{b}(m)+\log _{b}(n)\]

Answer 19

similarly, you cannot simplify lnA ln B

Answer 20

yup