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carlo123
26.07.2019 •
Mathematics
Suppose f (x) =x^2 find the graph of f (x+4
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Ответ:
The graph in the attached figure
Step-by-step explanation:
we have
To find f(x+4)
substitute the variable (x+4) in the function f(x)
Let
g(x)=f(x+4)
so
The rule of the transformation of f(x) to g(x) is
(x,y) -----> (x-4,y)
The translation is 4 units to the left
using a graphing tool
see the attached figure
Ответ:
Step-by-step explanation:
f(x) = 2x² + 14x - 4
= 2(x² + 7x) - 4
= 2(x² +7x + 3.5²) - 2(3.5²) - 4
= 2(x+3.5)² - 28.5
vertex (3.5, -28.5) = (7/2, -57/2)
The vertical intercept is the y-intercept, i.e., f(0) = -4.
The x-intercepts are the values of x for which y=0.
2x² + 14x - 4 = 0
x = [-14±√(14²-4(2)(-4))]/[2(2)] = [-7±√57]/2 ≅ -7.27, 0.27