33pole....
again in this... i am not sure if its in syllabus...
the pole of st. line 9x+y-28=0 wrt the circle; 2x2+2y2-3x+5y-7=0 is
a)(3,1)
b)(1,3)
c)(3,-1)
d)(-3,1)
plz give idea abt. this & how 2 solve various prob. on this
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10 Answers
33
1it is in various prob. in seat exams & arihant too & various practice paper
& i have written wrong pole as poe so for it sorry
11let the point x1,y1
be the poe(:P)
it obviously satisfies the given eqn of line
and the line 2xx1+2yy1-3(x+x1/2)+5(y+y1/2)-7=0
comparing the equations we can get the point
11for the theory im no master in that
better see arihant i saw it was pretty clear but left it because it was not in the syllabus
i only know that the equation of polar is T=0(i mean tangent)
3let P be a pt on or outside the curve let a line pass thru the pt P pass thru the given curve at two curves the two points be Q,R and then the locus of the meeting pt of the tgts of the pts Q,R is called the polar of the pt P and P is called the pole of the polar.
as far as i know dat the curve may be circle,parabola,hyperbola and ellipse