Question 152092: Hi,
How would I solve the following: Linear Equations and their Solutions
Find f(1) for f(x) = 4x3 - 3x2 - x + 2
Thank you,
Sally
Answer by nerdybill(7384)   (Show Source):
You can put this solution on YOUR website! The problem gives you a "function of x":
f(x) = 4x3 - 3x2 - x + 2
.
Now, to find f(1), it simply asks you to find the value of f(x) when x=1
.
So, simply substitute in 1 wherever you see the x and solve:
f(x) = 4x^3 - 3x^2 - x + 2
Substituting we get:
f(1) = 4(1)^3 - 3(1)^2 - 1 + 2
f(1) = 4(1) - 3(1) - 1 + 2
f(1) = 4 - 3 - 1 + 2
f(1) = 6 - 4
f(1) = 2 (this is what they want)
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