Answer: 9
Step-by-step explanation:
Use the chain rule:
Answer:
7 + 42i.
u v = 7i(6 - i)
= 42i - 7i^2 But i^2 = -1 so:
= 42i - 7(-1)
= 7 + 42i.
Answer: B
false
you only need to reverse the sign when you are dividing by a negative number