![24. Find the parametric and symmetric equations of the line that passes through the point (2, 1,-3) and is perpendicular to the planex+2y+2- 13. 14 marks] 25. Find the following quantities: 14 marks] a. (1+2)8- 5-5 b 23 (52 -1+i](http://img.homeworklib.com/questions/511e7210-8770-11eb-945c-6d543dd51c00.png?x-oss-process=image/resize,w_560)
Homework Answers
25) a.
conjugate(1 +2i)(3 - i)
(1 +2i)(3 - i) = 3 +1 + 6i +2 = 6+6i
conjugate (6+6i) = 6 - 6i
conjugate(1 +2i)(3 - i) = 6 -6i
b. (2 +3i)/( -1 +i)
Multiply num. and den. with conjugate of denominator i.e -1 - i
So, ( 2 +3i)(-1 - i)/(1 +1)
(-2 -2i -3i +3)/2
(1 -5i)/2
1/2 - 5i/2
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