How would solve the equation?

enter image source here

1 Answer
Jun 13, 2018

It's not an equation, it's a number. Can be further evaluated as follows.

Explanation:

#125.67(1 - 2 j)^(-1/2)#

#= 125.67 (sqrt5(1/sqrt5 - 2/sqrt5 j))^(-1/2)#

#= 125.67 /root(4)5(e^(j phi))^(-1/2)#, where #tan phi = -2#

#= 125.67 /root(4)5\ e^( -j phi/2)#

  • #bb(125.67 /root(4)5approx 84.04 )#

  • #bb( - phi/2 = - (arctan (-2))/2 = 31.72^o )#