Seudónimo Seudónimo
  • 01-03-2016
  • Mathematics
contestada

If f(x) = x^3-2x^2 which expression is equivalent to f(i)

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 01-03-2016
remember that
i^2=-1 so

f(i)=i^3-2i^2
i^3=i^2 times i=-1 times i=-i

2i^2=2(i^2)=2(-1)=-2


f(i)=-i-(-2)
f(i)=-i+2

answer is -i+2 or 2-i
Answer Link

Otras preguntas

The cdc reported that more elderly hispanic individuals than elderly white men and women are getting the influenza vaccine. the healthcare industry calls this d
How many 20 N bricks should you add to increase the friction force on a cart by 80 N if the coefficient of friction is 0.8?
A common-law defense to workplace accidents is that employees ___________ assume the risk inherent in the work.
11/2 as mixed numbers? PLEASEE help
Suppose the town of drippling springs enacts a wage floor of $20. What does area cf represent?.
What is the magnitude of the gravitational field at the surface of a neutron star whose mass is 1.71 times the mass of the sun and whose radius is 10.2 km?
I am creating a study guide and need help with step by step explanation of this question please
In one to two sentences, identify and describe the processes that must happen for sand to eventually become metamorphic rock.
Who was a popular subject in early christian art because he was seen as a prefiguration of christ?.
4. If a Scooter goes 8 M/s, how fast does it go in KM/h?