Solve (z-i)+(z+i)+(z-1)+(z-1)
Since we are dealing with complex numbers and taking its modulus, we can rewrite (z-i)=((-1)(i-z))=(i-z) doing the same for (z-1)=(1-z) we get (i-z)+(z+i)+(1-z)+(z-1)=(i+i+z-z+1+1+z-z) =(2i+2)=4 as we are taking its modulus.
YZ
Answered by Yubo Z. • Further Mathematics tutor
4762 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸A tank contains 500L of salty water. Pure water is pumped in at a rate of 10 L/sec, and the the mixture is pumped out at a rate of 15L/ sec. If the concentration of salt is 5g/L initially, form an equation of amount of salt, s, at t seconds.
Prove by induction that the sum from r=1 to n of (2r-1) is equal to n^2.
Integrate x^2sin(x) between -pi and pi
How do you prove the formula for the sum of n terms of an arithmetic progression?