A little stumped on how to carry this out, need to brush up on my algebra!
Evaluate the expression: log(base b) and then the square root of AB, where A=5 and B= -4
The possible answers are: a. 3.464
b. 0.500
c. -3.464 and...
____
d. 2 /-12
A short explanation as to how it works and the answer is all I need! :) Thanks!
2007-04-30 19:21:01 · 3 answers · asked by TelleyJade 3 in Science & Mathematics ➔ Mathematics
Well, they didn't give a base, but what if we assume it's log (Base 2) - I know sometimes "b" stands for that?
2007-04-30 19:30:20 · update #1
Okay wait, maybe I'm missing something..
It says evaluate GIVEN THESE: Log(b)A=5 - and - Log(b)B=-4, and then that beginning equation with the sqr. root of AB.
2007-04-30 19:32:54 · update #2
You made an error if A=5 , B=-4
their product is -20
Tjere exist on square root nor logarithm; of a negative number
2007-04-30 19:27:33 · answer #1 · answered by maussy 7 · 0⤊ 0⤋
First of all, the square root of -20 is an imaginary number, second, unless the base is 10, you can't do it on a calculator, unless you convert the log into a normal equation, but you don't have an equation, so you can't figure it out.
2007-05-01 02:30:45 · answer #2 · answered by Anonymous · 0⤊ 0⤋
need to know base!
The way you wrote it: sqrt(AB) if A=5 and B= -4 ===>sqrt(-20)?????? NOT POSIBLE!
check your question and try again
2007-05-01 02:25:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋