Zadanie:
Zapisz funkcję kwadratową w postaci ogólnej
a) y = (x-4)^2
b) y = -1/3(x-1)^2+3
c) y = \pierwiastek z 2(x+3)^2-1
d) y = -(x- \pierwiastek z 2)^2+2
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a)
b)
c)
d)
a)
y = (x-4)²
y = x²-8x+16
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b)
y = -⅓(x-1)²+3 = -⅓ (x²-2x+1)+3 = -⅓x²+⅔x-⅓+3 = -⅓ x²+⅔x+2⅔
y = -⅓ x² + ⅔x + 2⅔
=================
c)
y = √2(x+3)²-1 = √2(x²+6x+9)-1 = √2x²+6√2x+9√2-1
y = √2x² + 6√2x + 9√2-1
====================
d)
y = -(x-√2)²+2 = -(x²-2√2x+2)+2 = -x²+2√2x-2+2 = -x²+2√2x
y = -x² + 2√2x
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