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

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

You begin solving the equation 4 – 5x = 59 by subtracting 4 from both sides. Which is the best choice for Step 2?

Air Mass is a large body of air that has the same ____________ and ___________ throughout.

State whether the following is an example of inductive reasoning or deductive reasoning You have a summer job as a mechanic’s helper. The mechanic asks you loos

expand and simplify this can you help (2x²−3x+4) ( x²+5x−7)

Which measurement is not equal to 3 m 30 dm or 300 cm or 3000 mm or 3000 cm

Solve: K= 2(11 - k) + 14

Is 26 a perfect square?

Who established a school for navigation?

Which of the following occurs during anaphase I of meiosis? (A) Formation of tetrads (B) Separation of homologous chromosomes (C) Crossing over (D) Separation o

On a desk there are 6 sheets of blue paper, 4 sheets of yellow paper, 5 sheets of green paper, and 2 sheets of pink paper. In how many ways can the paper be sta