SOLUTION: Evaluate each function for the value specified
3. f (x) = -2x^3 + 5x^2 - x - 1; find
(a) f (-1), (b) f (0), and (c) f (2).
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Question 124404: Evaluate each function for the value specified
3. f (x) = -2x^3 + 5x^2 - x - 1; find
(a) f (-1), (b) f (0), and (c) f (2).
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
a)
Let's evaluate
Start with the given function.
Plug in . In other words, replace each x with -1.
Evaluate to get -1.
Evaluate to get 1.
Multiply -2 and -1 to get 2
Multiply 5 and 1 to get 5
Multiply -1 and -1 to get 1
Now combine like terms
-----------Now let's evaluate another value---------
b)
Let's evaluate
Start with the given function.
Plug in . In other words, replace each x with 0.
Evaluate to get 0.
Evaluate to get 0.
Multiply -2 and 0 to get 0
Multiply 5 and 0 to get 0
Multiply -1 and 0 to get 0
Now combine like terms
-----------Now let's evaluate another value---------
c)
Let's evaluate
Start with the given function.
Plug in . In other words, replace each x with 2.
Evaluate to get 8.
Evaluate to get 4.
Multiply -2 and 8 to get -16
Multiply 5 and 4 to get 20
Multiply -1 and 2 to get -2
Now combine like terms
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