Question

MEDAL
Which of the following statements are not true?
Check all that apply.

a. logM-logN=log(m-n)
b. logM+logN=log(MN)
c. logM^p=p*logM
d. log(M/N)=logM/logN

Answer 1

@ranga Do you know how to do this?

Answer 2

d option is not correct

Answer 3

correct answer for that is logM-logN

Answer 4

You have learned various rules for manipulating and simplifying expressions with exponents, such as the rule that says that x3 × x5 equals x8 because you can add the exponents. There are similar rules for logarithms.

Log Rules:

1) logb(mn) = logb(m) + logb(n)

2) logb(m/n) = logb(m) – logb(n)

3) logb(mn) = n · logb(m)

In less formal terms, the log rules might be expressed as:

1) Multiplication inside the log can be turned into addition outside the log, and vice versa.

2) Division inside the log can be turned into subtraction outside the log, and vice versa.

3) An exponent on everything inside a log can be moved out front as a multiplier, and vice versa.

Warning: Just as when you're dealing with exponents, the above rules work only if the bases are the same. For instance, the expression "logd(m) + logb(n)" cannot be simplified, because the bases (the "d" and the "b") are not the same, just as x2 × y3 cannot be simplified (because the bases x and y are not the same).

Answer 5

a is wrong,
b is correct
Have you typed c correctly? There is no equal sign.
d is wrong

Answer 6

sry. I fixed it

Answer 7

c is correct.
So a and d are wrong

Answer 8

thank you.

Answer 9

yw.