nce. X Why is x =-4? For any positive number A such that A 1, we have the following rule. Sи A A" if and only if m n Here we have this equation. 3 34 So, we apply the above rule to conclude x =-4. (b) For log3 81 we get the following equivalence. 1 3 1 log3 81 if and only if =x 81 -4 =3 81 which gives the following. Note that 3x 3 -4 Equating exponents, we have x=-4. More Thus log3 -4. 81 Start
nce. X Why is x =-4? For any positive number A such that A 1, we have the following rule. Sи A A" if and only if m n Here we have this equation. 3 34 So, we apply the above rule to conclude x =-4. (b) For log3 81 we get the following equivalence. 1 3 1 log3 81 if and only if =x 81 -4 =3 81 which gives the following. Note that 3x 3 -4 Equating exponents, we have x=-4. More Thus log3 -4. 81 Start
MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
I've never done logarthims before, any advice to comprehend what I'm doing is appreciated. If there is a formula or steps to follow that would help too. I'm curious as to where -4 came from out of this problem.
![nce.
X
Why is x =-4?
For any positive number A such that A 1, we have the following
rule.
Sи
A A" if and only if m n
Here we have this equation.
3 34
So, we apply the above rule to conclude x =-4.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8fb761b-a1dc-428b-80a0-a32d0a92efb8%2F6960e952-8f5e-4450-b372-a611792bdf33%2F6508xid.jpeg&w=3840&q=75)
Transcribed Image Text:nce.
X
Why is x =-4?
For any positive number A such that A 1, we have the following
rule.
Sи
A A" if and only if m n
Here we have this equation.
3 34
So, we apply the above rule to conclude x =-4.
![(b) For log3 81
we get the following equivalence.
1
3
1
log3 81
if and only if
=x
81
-4
=3
81
which gives the following.
Note that
3x 3
-4
Equating exponents, we have x=-4.
More
Thus log3
-4.
81
Start](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc8fb761b-a1dc-428b-80a0-a32d0a92efb8%2F6960e952-8f5e-4450-b372-a611792bdf33%2Fdtt86cg.jpeg&w=3840&q=75)
Transcribed Image Text:(b) For log3 81
we get the following equivalence.
1
3
1
log3 81
if and only if
=x
81
-4
=3
81
which gives the following.
Note that
3x 3
-4
Equating exponents, we have x=-4.
More
Thus log3
-4.
81
Start
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