Question

Express 1/(4-i)^2 in cartesian form.. is the answer 15/289 + 8i/289?? Am i rite??

Answer 1

@Mandy_Nakamoto what kind of equation is that

Answer 2

it says to change it to x+iy form.. under the complex number topic..

Answer 3

i think your are correct lol not sure

Answer 4

oh you have to draw it on Argand plane I think

Answer 5

yes you are right XD

Answer 6

yeah but Argand Plane will only give a graphical solution

Answer 7

yaaa katrina kaif to the resque

Answer 8

1/(4-i)^2 = 1/(15 - 8i)
multiply by the conjugate ( 15+8i)

(15+8i)/ 289 = 15/289 + 8i/289

Answer 9

Yay! im rite!!!! huhuhu...

Answer 10

good one Mandy

Answer 11

But about the argand plane.. i have to change the equation to cartesian form first rite??

Answer 12

no in order to draw it on argand plane you only need the x + iy format and the point is (x,y) understand

Answer 13

So bascially the point you will get is (15/289 , 8/289)

Answer 14

wow Rajarshi you are awesome at maths

Answer 15

but isnt cartesian form=x+iy form??

Answer 16

get it