You need to evaluate the product of the vectors `u = u_x*i + u_y*j, v = v_x*i + v_y*j` , such that:
`u*v = u_x*v_x + u_y*v_y`
`u*v = (3)*(7) + 4*(-2)`
`u*v = 21 - 8`
`u*v = 13`
Hence, evaluating the product of the vectors `u = u_x*i + u_y*j, v = v_x*i + v_y*j,u = <3,4>, v = <7,-2>` , yields `u*v = 13.`
No comments:
Post a Comment