Question

na função f(x)=2x^2-7x+1 obtenha: f(0), f(1), f(-1), f(2)

Answer 1

Explicação passo-a-passo:

f(x)=2x^2-7x+1

f(0)=2.(0)²-7.(0)+1

f(0)=2.(0)-0+1

f(0)=0-0+1

f(0)=0+1

f(0)=1

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f(1)=2.(1)²-7.(1)+1

f(1)=2.(1)-7+1

f(1)=2-6

f(1)=-4

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f(-1)=2.(-1)²-7.(-1)+1

f(-1)=2.(1)+7+1

f(-1)=2+8

f(-1)=10

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f(2)=2.(2)²-7.(2)+1

f(2)=2.(4)-14+1

f(2)=8-13

f(2)=-5

Answer 2

f(x)=2x²-7x+1

f(0)= 2 • 0² - 7 • 0 + 1

f(0)= 2 • 0 - 0 + 1

f(0)= 0 + 1

f(0)= 1

f(1)= 2 • 1² - 7 •1 + 1

f(1) = 2 • 1 - 7 + 1

f(1)= 2 - 6

f(1) = - 4

f(-1)= 2 • (-1)² - 7 • (-1) + 1

f(-1)= 2 • 1 + 7 + 1

f(-1)= 2 + 8

f(-1) = 10

f(2)= 2 • 2² - 7 • 2 + 1

f(2)= 2 • 4 - 14 + 1

f(2)= 8 - 13

f(2)= - 5