Finding modulus and argument of complex number (x+iy)
Draw argand diagram
Modulus=|z|= length of the line
So |z|=(x2+y2)0.5
Argument=Angle between real (x axis) and line
so arg(z)=arctan(y/x)
EF
Answered by Emma F. • Further Mathematics tutor
7431 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸Integrate the function f(x) = x ln (x) over the interval [1,e].
The function f is defined for x > 0 by f (x) = x^1n x. Obtain an expression for f ′ (x).
Calculate: ( 2+i√(5) )( √(5)-i).
It is given that z = 3i(7-i)(i+1). Show that z can be written in the form 24i - k. State the integer k.