Math CentralQuandaries & Queries


Question from Rabz, a student:

Determine the vector equation for the intersection between the two given planes
2x+7y equal to 14,x+z equal to 7

Hi Rabz,

Suppose $v_1$ is a vector normal to the first plane and $v_2$ is a vector normal to the second plane. What do you know about $v_1 \times v_2,$ the cross product of $v_1$ and $v_2?$


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