Let B={(1,-2,0,-1), (0,1,0,3), (1,2,1.0)], and x=(4,3,-2,-5) Find [x]B Give your answer in the form (a,b,c) with no spaces

= Let r₁(1)(-6,9,7)+1(0, 1, 1) and r₂ (s) (-22,7, 13) + s(-4,0,2). Find the point of intersection, P, of the two lines r, and T₂-

Let y = U 4 + 5 U and u = = = x³ - 2x.

Let u = (-1, 1, 0) and = (-7, 6, -5). Compute the following: u.v= v. ū |||||² = 6 (ú. v) = = (6u).v= ū. (6v) (ū. v) v = =

Write v as a linear combination of u₁, ₂, and u3, if possible. (If not possible, enter IMPOSSIBLE.) v = (0, 6, 8, 0), ū₁ = (1, 1, 2, 2), ¹₂ = (2, 3, 5, 6), 3 = (-3, 1, -4, 2) Du₂ )u3 V = + +

Answer both

Find a bijection between the interval (−1, 1) and R.

if a and b are positive real number, then 0<(ab)1/2<=(a+b)/2.