Recent content by DoderMan

For part (a) I calculated the determinant just like you did. I got D=60-5λ then I put 60-5λ=0 => λ=12. Then I substituted lambda for 12 and calculated the determinant again and got D= -6 I recalculated part (b) and (c). I took pictures of the calculations and uploaded them here. In part (b)...

The determinant is -6 when λ=12. but could you please verify if the methods that i have chosen to solve the problems are correct as well as the answer? Thanks in advance.

Consider the following three vectors in R3: u1=(3,6,2) , u2=(-1,0,1) , u3=(3,λ,7) a) Find all values of λ E R, such that {u1, u2, u3} spans R3, i.e.R3 = span {u1, u2, u3} b) Find the value of λ E R, such that {u1, u2, u3} spans a plane in R3. c) Find all values of k E R, such that the...