cho 3f la mot da thuc thoa man 3f(x)+2f(1-x)=2x+9. khi do f(2)=?
Cho da thuc f(x) thoa man f(x)+x.f(-x)=x+1 voi moi gia tri cua x. Tinh f(1).
cho da thuc f(x)thoa man :
1,f(3)=2
2,f(a.b)=f(a)*f(b)
tinh f(27)
Cho da thuc f(x) thoa man dieu kien :
x.f (x+1) = ( x+2 ). f(x)
tim da thuc co bac nho hon 4 thoa man he thuc a)3*f(x)-f(1-x)=x^2 -1
b)x*P(x-2)=(x-1)*P(x)
cho da thuc f(x)=1+x mu 2 +x mu 4 +...+x mu 2010. tinh f(-1), f(1)
Cho da thuc f(x)=a.x2+b.x+c Tinh f(1)?
tu do hay tinh tong cac he so cua da thuc g(x) sau khi rut gon:
g(x)=(2021x2022-2022x2021+2)2021.(2022x2021-2021x2022-2)2022
a. Xac dinh a de nghiem cua da thuc f(x) = 2x-4 cung la nghiem cua da thuc g(x) = x^2 - ax +2b.
b. Cho f(x) = ax^3 + bx^2 + cx + d, trong do a; b; c; d la hang so va thoa man : b = 3a + c
Chung to rang : f(1) = f(-2)
cho da thuc f(x)=2x-3 . Tinh f(m)-f(m+2)
tim da thuc f(x) biet rang voi moi so m thi f(m) -f(m+2)=10
