The complex conjugate of something is essentially just taking the opposite sign of the imaginary part. The following are complex conjugates:
a + bi
a - bi
In this case the complex conjugate of 9 - 4i is 9 + 4i
Now we must add them together like so:
(9 - 4i) + (9 + 4i)
9 - 4i + 9 + 4i
^^^Combine like terms
(9 + 9) + (-4i + 4i)
18 + 0
18
As you can see when you add complex conjugates your answer will be a real number
Hope this helped!
~Just a girl in love with Shawn Mendes
Answer:
A car's velocity changes from 25 m/s to 20 m/s in 5 seconds.
Step-by-step explanation:
By definition, Acceleration is the rate of change of Velocity of an object.
I.e it is the( final velocity minus initial velocity ) ÷ by the time it took for the velocity to change.
If we observe the choices only one choice gives us all 3 components (final velocity, initial velocity, time taken for velocity to change), which is :
A car's velocity changes from 25 m/s to 20 m/s in 5 seconds.
Definition a brief informal dedication as of a book or a work of art
1/3x
= (1/3)*x
= (1/3)* (x/1) (because x/1=x)
= (1*x) / (3*1)
= x/3
x/3 is equivalent to 1/3x~
The statement is true
hope this helps you
Answer:
ok
Step-by-step explanation:
ok and thank you for the free points
