A community for students.
Here's the question you clicked on:
 0 viewing
hba
 4 years ago
Question...
hba
 4 years ago
Question...

This Question is Closed

hba
 4 years ago
Best ResponseYou've already chosen the best response.0If \[z _{1}=1i ,z_{2}=7+i\] then the modulus of \[\frac{ z _{1}z _{2} }{ z _{1}z _{2} }\]

hba
 4 years ago
Best ResponseYou've already chosen the best response.0looks like no one is interested in helping me :D

hba
 4 years ago
Best ResponseYou've already chosen the best response.0I tried to Solve it And got the final expression as \[\frac{ 62i }{ 86i }\] Do I apply the modulus now ?

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1First find z1z2 and z1 z2 Then take the modulus of both and divide

hba
 4 years ago
Best ResponseYou've already chosen the best response.0@ash2326 I think you did not see my comment

hba
 4 years ago
Best ResponseYou've already chosen the best response.0I moreover simplified it to \[3i/43i\]

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1Now find modulus of 3i and find modulus of 43i and divide both

hba
 4 years ago
Best ResponseYou've already chosen the best response.0Taking a conjugate would help ?

hba
 4 years ago
Best ResponseYou've already chosen the best response.0Well @ash2326 I tried it that way but it didn't help :(

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1Are you getting a wrong answer?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0multiply numerator and denominator by 4+3i it will make the problem more easier

hba
 4 years ago
Best ResponseYou've already chosen the best response.0@niksva This is what we call a conjugate and i was asking that only ?

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1Answer is \[\frac{\sqrt {10}}{5}\] What did you get?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0@hba i know what is meant by conjugate i m telling u to rationalize the function

ash2326
 4 years ago
Best ResponseYou've already chosen the best response.1You made a mistake here. Let me show \[3i/43i\] \[3i=\sqrt{(3)^2+(1)^2}=\sqrt{10}\] \[43i=\sqrt{(4)^2+(3)^2}=\sqrt {25}=5\] so you'd get \[\frac{\sqrt{10}}{5}\]
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.