aleahspitzley30661 aleahspitzley30661
  • 01-02-2018
  • Mathematics
contestada

For what values of a are v = a i − j + k and w = a i + a j − 3 k perpendicular? give exact values.

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 08-02-2018
The vectors are perpendicular when their dot product is zero. That is
.. a^2 -a -3 = 0
.. (a -1/2)^2 -13/4 = 0
.. a = (1 ±√13)/2
Answer Link

Otras preguntas

whatb will 5.63 round to
Besides respiration, what other ways is carbon released into the atmosphere?
why was northern Italy a natural birthplace for the renaissance?
Casey took 25 tests in 135 days. At this rate, in how many days will she take another ten tests?
How many hundredths are in 2.00?
How did Washington Roebling got sick while making Brooklyn Bridge?
The formula for the area,A, of a trapezoid is shown below, where ݄H represents its height and b1 and b2 represent the lengths of its bases.  For this problem, l
Determine whether each number is a solution of the given inequality. 3y-8<22
To what extent was colonial America a land of opportunity
When new clay sediment is deposited on top of old beach material iy's known as