21
eragon24 _Retired
·2009-10-31 20:59:25
hey jus check in the q if its a,c,b are in gp......
1
Ram lakhan Meena
·2017-09-30 20:32:23
area is constant .....
since x intercept is -c/a and y intercept is -c/b.
so its area 1/2 (-c/b)(-c/a)
= 1/2(c^2/ab) and c^2=ab as the are in gp
=1/2 A CONSTANT AREA.....................
1357
Manish Shankar
·2009-10-31 06:17:32
b/a=c/b=r
it becomes
y=-(a/b)x-c/b
y=-x/r-r
which is the equation of tangent to parabola y2=4x with slope as (-1/r)
So i m getting none of these
11
Gone..
·2009-10-31 21:01:30
o ya sorry...its a,c,b in Gp..q edited.
21
eragon24 _Retired
·2009-10-31 21:02:34
C).forms a triangle whose area is constant
a ,c, b in gp so c2=ab
this line ax +by +c=0 forms a right angled triangle at origin
points of intersection of this line with x and y axis respectively are (-c/a,0) and (0,-c/b)
area of this right angled triangle at origin is 12x-cax-cb
=c22ab=1/2
hence area constant