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muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.2
you can solve it by rationalizing dw:1343807584287:dw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
i dont get it .
 2 years ago

muhammad9t5 Group TitleBest ResponseYou've already chosen the best response.2
now multiply dominaters and nominators
 2 years ago

Neo92 Group TitleBest ResponseYou've already chosen the best response.0
10i/10i =(0+10i)/(10i) =(0+10i)(10+i)/(10i)(10+i) do the remaining few calculations and tell me the answer..
 2 years ago

Neo92 Group TitleBest ResponseYou've already chosen the best response.0
still didnt get it??
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
100i + 10i^2/100i^2 ?
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
what should i do to get conjugate form ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Denominator part is right but need to solve further.. \[100  i^2 = ??\]
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
\[\large i^2 = 1\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
i need x+iy form.. :( confuse
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yes you will get that.. Just have patience.. Tell me : \[100  i^2 = ??\]
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
The value of \(i^2 \) is 1..
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
or 100+1 = 101 ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Last one is right..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Similarly do it in the Numerator,,,
 2 years ago

Neo92 Group TitleBest ResponseYou've already chosen the best response.0
@greysica i^2 = 1 therefore 100  (1) ==?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
\[100i + 10 i^2 = ??\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
100(1)+10(1)^2 = 100+10 =90 ? like this ?
 2 years ago

Neo92 Group TitleBest ResponseYou've already chosen the best response.0
(100i  10) use the fact that i^2 = 1
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
You can change i^2 there and not i.. remain i as such..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
\[\large 100i + 10i^2 = 100i + 10(1) = ??\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
ohh i see , 100i 10 ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Now you have to find this in the form z = x + iy.. So: \[\frac{10 + 100i}{101} \implies \frac{10}{101} + i \frac{100}{101}\]
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Here I have separated both.. does it look like x + iy ??
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
yes , i do understand . but my teacher already give me an answer for this , he said it should be 10+i and i must find the way to get 10 + i
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
See your teacher said to you want to solve this by using \(10 + i\) Here we have done the same ..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
The conjugate of \(10  i\) is \(10 + i\) So we have multiplied and divide it by the conjugate that is : \(10 + i\)
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
i dont understand . we've got 10/101+i100/101 and my teacher said 10+i as the answer
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
This will not be the answer for this.. Ask him again when you will meet him..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
10 + i is the conjugate for this..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I think he just said to find conjugate so then the answer should be \(10 + i\)
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
okay ,how about this.. 11+2i / 4+3i I do some calculation and get 2+i as the answer but my teacher said the asnwer is 2i
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Let me check..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
2  i is right..
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
okay i will write my calculation ..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Can you show me..??
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343814167411:dw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343814339078:dw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
50/25  i (25/25) 50/25 + i 2+i
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
You are doing mistake of minus.. Let me understand what you did and what the way of your teacher to solve this complex numbers problems..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1343814575597:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1343814799716:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Can you once try this ?? Do calculations according to it.. Try once..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1343815363469:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1343815404009:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Here x1 = 11, x2 = 4 y1 = 2 and y2 = 3
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
yap , the asnwer is 2+i
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
2 + i ??
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
ohh the formula from my book is wrong , omg ..
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
nono i mean 2i
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Is it clear to you now ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
See i show you more properly how I do this types of problems..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
\[\frac{11 + 2i}{4 + 3i} \times \frac{4  3i}{4  3i} \implies \frac{44  33i + 8i  6i^2}{(4)^2  (3i)^2} \implies \frac{44  25i 6(1)}{169i^2}\] \[\frac{44  25i + 6}{16  9(1)} \implies \frac{50  25i}{16 + 9} \implies \frac{50  25i}{25} \implies \frac{50}{25}  i \frac{25}{25} \implies 2  i\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
okay , thank you !! if u dont mind , i still have a little confuse , if z1/z2 = x1+iy1/x2+iy2 how about z2/2z1 ? is that means .. wait i draw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343816101532:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
You have to multiply and divide by the conjugate.. Do you know how to find conjugate of a complex number ??
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343816319564:dw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
like that ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
yes well done.. Need not to multiply 2.. You can simply do this: dw:1343816404418:dw
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
hmm i see .. i really suck at this actually .. but i try to understand .. wait i try to do some calculation, thank you btw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Take your time.. Welcome dear..
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343817123248:dw there is i^2
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343817171131:dw and dissapear in this .. where is i^2 ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1343817264875:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
\[\large y_1y_2(i^2) = y_1y_2(1) \implies \color{blue}{+y_1y_2}\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
ohh I understand , so i^2 always meaning 1 in compleks form ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Remember: \[\large i = \sqrt{1}\] So need to change \(i\).. \[\large i^2 = 1\] \[\large i^3 = i\] \[\large i^4 = 1\]
 2 years ago

greysica Group TitleBest ResponseYou've already chosen the best response.0
dw:1343817500482:dw is that correct ?
 2 years ago