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A point Q on a segment with endpoints A (2,-1) and C (4,2) partitions the segment in a 4:1 ratio. Find Q. You must show all work to receive credit?
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How do you find the missing endpoint of a segment with an endpoint and a midpoint?
The direction of missing endpoint is the same as the direction from the known end point to the midpoint. The distance from the midpoint to the missing endpoint is the same as the distance from the known end point to the midpoint. In coordinate geometry it is simple. If the known end point is (p, q) and the mid point is (r, s) then the missing point is (2r - p, 2s - q).
Why do you choose the Q point at the centre of the load line?
When operating point is chosen at the center of the load line, faithful reproduction of the amplified signal is obtained by allowing large voltage and current. So we choose q point at the center of the loadline.
What is the sign of the y vaue of a point?
That depends on whether it's above the x-axis (Q-1 or Q-2) or below the x-axis (Q-3 or Q-4). So, based on the information in the question, it could go either way.
In the diagram below which distance represents the distance from point Q to RS?
QT (APEX)
