If a = 2 + i, and b = 3 – 2i, what is b/a?Question 3Select one:a.4/5 -(7/5)ib.2 + (1/5)ic.10 – id.10 + ie.Impossible
Question
If a = 2 + i, and b = 3 – 2i, what is b/a?
Question 3
Select one:
a. 4/5 - (7/5)i
b. 2 + (1/5)i
c. 10 – i
d. 10 + i
e. Impossible
Solution
To find the value of b/a, we need to divide b by a.
First, let's simplify a and b:
a = 2 + i b = 3 - 2i
Now, let's divide b by a:
b/a = (3 - 2i) / (2 + i)
To simplify this expression, we can multiply the numerator and denominator by the conjugate of the denominator:
b/a = (3 - 2i) * (2 - i) / (2 + i) * (2 - i)
Expanding the numerator and denominator:
b/a = (6 - 3i - 4i + 2i^2) / (4 - 2i + 2i - i^2)
Simplifying the numerator:
b/a = (6 - 7i + 2i^2) / (4 - i^2)
Since i^2 = -1, we can substitute it in the expression:
b/a = (6 - 7i + 2(-1)) / (4 - (-1))
Simplifying further:
b/a = (6 - 7i - 2) / (4 + 1)
b/a = (4 - 7i) / 5
Therefore, the value of b/a is 4/5 - (7/5)i.
The correct answer is option a. 4/5 - (7/5)i.
Similar Questions
Select the correct answerIf (𝟓𝒂−𝟑𝒃)∶(𝟒𝒂−𝟐𝒃)=𝟐∶𝟑 then a : b is equal to:Options3 : 45 : 85 : 72 : 3
If a : b =1(1/2):2 (1/4) and b:c = 2:3(1/2),then what is a:b:c equal toA12 : 8 : 21B8 : 21 : 12C8 : 12 : 21D21 : 8 : 12
Multiply the following complex numbers:(7 + 2i)(2 + 3i)A.8 - 25iB.20 - 25iC.8 + 25iD.20 + 25iSUBMITarrow_backPREVIOUS
Which of the following two will give the same result?(i) 42//2(ii) 21%6(iii) 12/4(iv) 11*2ii,iiii, iiiii, iviii, i
Perform the indicated operation & simplify. Express the answer in terms of i (as a complex number).(2−7i)2(2-7𝑖)2 =
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.