I not very sure the method but i used vrctor product of BA x BC to get the norma

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junior college 1 | H1 Maths
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junior college 1 H1 Maths Singapore

I not very sure the method but i used vrctor product of BA x BC to get the normal vector of the plane..

Date Posted: 3 years ago

Mig

3 years ago

Oh on thanks! I got -8x-6y-12z=24 might have made an error somewhere i shall check it again!

Khir Zulkifli

3 years ago

Hi yours is correct!

Mig

3 years ago

Oh!! Ok thanks!

Mig

3 years ago

My normal vector is -8i-6j-12k
(-4,-3,-6)

3 years ago

Hello! It should be -8x-6y-12z = -24. Or 4x +3y+6z=12 as per the picture attached!

done {{ upvoteCount }} Upvotes

clear {{ downvoteCount * -1 }} Downvotes

Hi, your method is correct. In my workings, i factorised -2 out so that normal vector is positive (leaving it as -8,-6,-12 is not wrong either).

Date Posted: 3 years ago

Mig

3 years ago

Wow thanks!