1.Oblicz wartości funkcji dla argumentów -1oraz2.
a) f(x) =x+5 b)f(x) =x3 +x c)f(x) =(x +1)(x-2)
Proszę o odpowieć.
x=-1 x=2
a) f(x)=x+5
f(-1)=-1+5=4
f(2)=2+5=7
b) f(x)=x³+x
f(-1)=(-1)³-1 = -1-1=-2
f(2)=2³ + 2 = 8+2=10
c)f(x)=(x+1)(x-2)
f(-1)=(-1+1)(-1-2)=0*(-3)=0
f(2)=(2+1)(2-2)=3*0 = 0
po prostu podstawiasz za x
a) f(x) =x+5
x=-1 to F(x) = -1+5 = 4
x=2 to f(x) = 2+5 =7
b)f(x) =x3 +x
x=-1, czyli -1³+1 = -1-1 =-2
x=2, czyli F(x) = 2³+2 = 8+2=10
c)f(x) =(x +1)(x-2)
F(x) = x²-2x+x-2 = x²-x-2
x=-1, czyli f(x) = -1²-(-1)-2 = 1+1-2 =0
x=2, czyli f(x) = 2²-2-2 = 4-4=0
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x=-1 x=2
a) f(x)=x+5
f(-1)=-1+5=4
f(2)=2+5=7
b) f(x)=x³+x
f(-1)=(-1)³-1 = -1-1=-2
f(2)=2³ + 2 = 8+2=10
c)f(x)=(x+1)(x-2)
f(-1)=(-1+1)(-1-2)=0*(-3)=0
f(2)=(2+1)(2-2)=3*0 = 0
po prostu podstawiasz za x
a) f(x) =x+5
x=-1 to F(x) = -1+5 = 4
x=2 to f(x) = 2+5 =7
b)f(x) =x3 +x
x=-1, czyli -1³+1 = -1-1 =-2
x=2, czyli F(x) = 2³+2 = 8+2=10
c)f(x) =(x +1)(x-2)
F(x) = x²-2x+x-2 = x²-x-2
x=-1, czyli f(x) = -1²-(-1)-2 = 1+1-2 =0
x=2, czyli f(x) = 2²-2-2 = 4-4=0