Question

If A is i+2j_3k b is 3i-j+2k then find out 2a+3b and 3a+2b

Answer 1

Answer:

2a+3b=11i+j

3a+2b=9i+4j-5k

Explanation:

a=i+2j-3k

b=3i-j+2k

2a+3b=2(i+2j-3k)+3(3i-j+2k)

=2i+4j-6k+9i-3j+6k

=11i+j

3a+2b=3(i+2j-3k)+2(3i-j+2k)

=3i+6j-9k+6i-2j+4k

=9i+4j-5k