Easy# Which False

LINALG-4UEYOU

Which of the following statements are false?

$(i)$ $2 x^2 +3x^3 -2 x^4$ is a linear combination of: $(x^2, x^3, x^4)$

$(ii)$ $3 x^2-x+1$ is a linear combination of: $(x^2, x, 1)$

$(iii)$ $\sqrt x+\cfrac{1}{3} y$ is a linear combination of $(x,y)$