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## #1 Re: Help Me ! » Complex Numbers » 2006-01-29 22:04:44

i mean
how IF X=[1,4] & A=[2,4] then A' =3. A` =
how IF A[1,2] & B0,2) then A(Intersection Sign)B=

Also have another question
1. If the area of a triangle is 16, formed by the points Z, Z+iZ and iZ in a complex plane then |Z|=_____

Gives 4(Under-root-->2) how?

## #2 Re: Help Me ! » Complex Numbers » 2006-01-29 05:24:16

didn;t got u.....?
hmmm can u also give me solutions steps of 3 and 4 because haven't ever seen these type of questions before so ..... not sure about them.....

## #3 Re: Help Me ! » Complex Numbers » 2006-01-29 05:06:58

thanks kempos
can u also put in solution steps of 3,4,5 cause these questions are new to me....

## #4 Help Me ! » Complex Numbers » 2006-01-29 04:08:01

dorez
Replies: 16

Asalam O ALikum,
Straight forward --> having problems understanding following questions....

1. If X & Y are two sets & n(X) =18,n(Y)=24, n(XUY)=40   then n(X[Intersection sign]Y)=
Answer is 2 but dont know how....

2. If x^2 +y^2 = a^2 then in terms of conjgate coordinates,____
Answers is Z.Z^_ = a^2 don't know how(meaning a __ above Z)

3. IF X=[1,4] & A=[2,4] then A' =

4. IF A[1,2] & B=(0,2) then A(Intersection Sign)B=

5. If i^2=-1, then the value of i^-4k+3

6. if a+i3b= -1+3i^2k then real part =_________

7. if x+iy=5-6i^2k, the imaginary part(y) =________

8. The expression of 3/(under-the-root->6) - (under-the-root->-12) in the form of a+ib is_________