Question

Lef f(x)=Ax^2+Bx+C. If f(1)=3, f(-1)=7, and f(0)=4, what are the values of A, B, and C?

Answer 1

well if f(0) = 4.....then let x=0, ->C = 4 ................f(1) = 3, let x = 1 -> A+B +4 = 3 --> A+B =-1.......f(-1)=7, let x= -1 -->A-B +4 = 7 --> A-B = 3 ............solve A and B using substitution

Answer 2

Theres something random i read in a book called "Linear Interpolation", i wonder if that could solve this....ima try.

Answer 3

using Linear Interpolation im getting:
\[f(x) = x^2-2x+4\], is that what answer everyone else is getting doing it the normal way?

Answer 4

i'll post a solution if it matches.

Answer 5

yes that matches...A=1, B=-2, C = 4

Answer 6

nice, alright, let me scan my work.

Answer 7

Let f(x) = -2x - 7 and g(x) = -4x + 6. Find (f*g)(-5)

Answer 8

If https://dlap.gradpoint.com/Resz/~0.H5Nd26u4FRMyUA6.1KhFdZPyJ_eB50_PyWuvUEA46ue4_B2wc9knAegCDUw/7234256,D47/Assets/questions/test/algebra_2/alg2inve/mc029

Answer 9

PLS HELP!!!
Evaluate the piecewise function at the indicated value from the domain: https://dlap.

Answer 10

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Graph the relation shown in the table. Is the relation a function? Why or why not?
https://dlap.

Answer 11

Which two lines in this excerpt from Guy de Maupassant's short story "Boule de Su

Answer 12

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Answer 13

Please check answer

Answer 14

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Answer 16

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Answer 19

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Answer 20

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Answer 21

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Answer 22

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Answer 23

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Answer 25

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Answer 26

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