Question

Determine a x b if a = 2 i + 3j and b = 3i + 5j​

Answer 1

Answer:

a=2i+3j+k

b=2i+5j+k

i j k

a×b= 2 3 0

3 5 0

a×b=i(0-0)-j(0-0)+k(10-9)

a×b=0i-0j+k

a×b=k

Answer 2

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