Question

oblicz wartosci wielomianu w dla: x= 0, x= 1, x= -2, x= -3 b)

b) w(x)= -2x³ + x² - 5x +2

c) w(x)= x³ - 4x² + 3x - 4

d) w(x)= -x⁴ + 5x³ - 4x - 10

wyznacz wspolczynnik a wielomianu w, jesli:

a) w(x) ax² + x +1, w(1)=3

b) w(x)= 3x³ - x² + a, w(3)=0

Answer 1

b) x=0; w(x)=2
x=1; w(x)=-2+1-5+2= -4
x=-2; w(x)=16+4+10+2= 32
x=-3; w(x)= 54+9+15+2= 80

c) x=0; w(x)= -4
x=1; w(x)=1-4+3-4= -4

x=-2; w(x)=-8-16-12-4= 40

x=-3; w(x)=-27-36-27-4= -94

 

d) x=0; w(x)=-10

x=1; w(x)=-1+5-4-10= -10

x=-2; w(x)=-16-40+8-10= 58

x=-3; w(x)=-81-135+12-10= 214

______

 

a)a=1

b)a=-75