destinewilcox33 destinewilcox33
  • 09-05-2018
  • Mathematics
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given the function f(x)=2x^2-3x, calculate f(a+h)-f(a)/h

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Аноним Аноним
  • 09-05-2018
[tex]f(x)=2x^2-3x[/tex]

[tex] \dfrac{ f(a+h)-f(a)}{h} [/tex]

[tex]= \dfrac{2(a + h)^2 - 3(a + h) - (2a^2 - 3a)}{h} [/tex]

[tex]= \dfrac{2(a^2 + 2ah + h^2) - 3a - 3h - 2a^2 + 3a}{h}}[/tex]

[tex]= \dfrac{2a^2 + 4ah + 2h^2 - 3a - 3h - 2a^2 + 3a}{h}}[/tex]

[tex]= \dfrac{4ah + 2h^2 - 3h}{h}}[/tex]

[tex]= \dfrac{h(4a + 2h - 3)}{h}}[/tex]

[tex]= 4a + 2h - 3[/tex]
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