Physics, asked by aritraroy0102, 6 months ago

If A 2i -3k and B=i+4j-2k; find AxB =?

Answers

Answered by balanibhoomi7

1

Explanation:

there are two methods of solving this question ....

one is long

nd other is determinant method (short cute method)

....

m using the short cut one bcoz it's easy

Attachments:

Answered by Nitya1221

1

Answer:

2i²+8ij -7ki -12jk +6k²

Explanation:

A×B = (2i-3k)(i+4j-2k)

= 2i(i+4j-2k) -3k(i+4j-2k)

= 2i²+8ij -4ki -3ki -12jk +6k²

= 2i²+8ij -7ki -12jk +6k²

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