A) \[n=20\] and \[Re\left( z \right)=10\]
B) \[n=20\] and \[Re\left( z \right)=10\]
C) \[n=40\] and\[Re\left( z \right)=-10\]
D) \[n=40\] and\[Re\left( z \right)=10\]
Correct Answer: C
Solution :
Put\[~z=x+10i\] \[\therefore \] \[2\left( x+10i \right)n=\left( 2i1 \right).\left[ 2\left( x+10i \right)+n \right]\] compare real and imginary coefficients \[x=10,n=40\]You need to login to perform this action.
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