Given a complex number in the form:
The nth-power of this number,
, can be calculated as follows:
- the modulus of
is equal to the nth-power of the modulus of z, while the angle of
is equal to n multiplied the angle of z, so:
In our case, n=3, so
is equal to
(1)
And since
and both sine and cosine are periodic in
, (1) becomes
We can add or subtract integer. We can also subtract like terms.
Answer:
yes they are inverserve of each other
Step-by-step explanation:
f(x) = y just for say
y=3x+9
switch the x and y value and solve for y
x=3y+9
x-9=3y
(x-9)/3 = y
inverserve of f(x) is g(X)
and now g(x) = y
y= (x-9)/3
switch x and y and solve for y
x=(y-9)/3
3x= y-9
3x+ 9 = y
inverserve of g(x) is f(X)
root (-20,0) vertical intercept (0,4)
Answer:
See step-by-step explanation
Step-by-step explanation:
1. 5
2. 20
3. 30
4. 10
5. 40
6. 50
7. 15
8. 60
9. 90