Maharashtra State BoardHSC Arts 12th Board Exam
Advertisement Remove all ads

(i^+j^-k^)⋅(i^-j^+k^) = ______ - Mathematics and Statistics

Advertisement Remove all ads
Advertisement Remove all ads
Advertisement Remove all ads
MCQ
Fill in the Blanks

`(hat"i" + hat"j" - hat"k")*(hat"i" - hat"j" + hat"k")` = ______

Options

  • `hat"i" - hat"j" - hat"k"`

  • 1

  • −1

  • `−hat"j" + hat"k"`

Advertisement Remove all ads

Solution

−1

Explanation:

`(hat"i" + hat"j" - hat"k")*(hat"i" - hat"j" + hat"k")`

= 1 + 1 (- 1) + (- 1) (1)

= 1 - 1 - 1

= - 1

Concept: Representation of Vector
  Is there an error in this question or solution?
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×