Question

☺hey user❤

physics class 11th

Calculate the values of
1. j ^. (2i^-3j^+k^).
2. (-2i^-j^).(3i^+k^)
Ans. (1. -3)( 2. 6)

plz help☺..
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Answer 1

in dot product

i×i =1 i×j=0 j×i=0

j×j=1 j×k=0 k×j=0

k×k=1 k×i=0 i×k=0

hope this ans may help you..