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could someone help me with this problem? f(x) = x^2 +4x + 1?
I don't neccessarily want the answer, but show me how to work it so that I may complete a chart and know what I am doing. Thanks.
I am trying to graph a parabola
6 Answers
- chanljkkLv 71 decade agoFavorite Answer
What is your question?
If you want to plot them, just give a set of x numbers,and compute f(x).
If you want the derivative of f(x), f'(x)=2x+ 4.
If you want the maximum or minimum, set f'(x)=0.
- 1 decade ago
if you want to make a chart using f(x) and x then you simply pick any numbers for x and write them in the first column and you get an answer after you put the value of x into the equation and solve the arithmetic.
For example pick x = 1, 1 would be the first number in the chart and then when you do [1^2 + (4 * 1) +1] you get 6 which will be the second number in the chart.
Hope this helps
- alrivera_1Lv 41 decade ago
Ok, let's see:
x^2 + 4x + 1
for a perfect square you will need,
x^2 + 4x + 4 but this is different from what you have, so, try the following:
x^2 + 4x + 4 + 1 - 4 (you add 4 and subtract 4...that's the trick!)
(x+2)^2 - 3 = f(x)
Hope this helps!
- CPUcateLv 61 decade ago
f(x) = x^2 + 4x + 1 . . . . . . is similar to y = x^2 + 4x + 1
y = x^2 + 4x + 2^2 + 1 - 2^2
y = ( x + 2)^2 -3
y + 3 = ( x + 2)^2 . . . . . this is a parabola with vertex (-3, -2) facing up
intercept at (-2+sqr(3), 1)
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