0

Guest

Courses New

If one of the circles X2+Y2+2bx+c =0 and X2+Y2+2bx+c=0 within the other then which option is correct and why?I ab>0,c>0Ii ab>0,c

If one of the circles X2+Y2+2bx+c =0 and X2+Y2+2bx+c=0 within the other then which option is correct and why?I ab>0,c>0Ii ab>0,c

Grade:11

2 Answers

sid
22 Points
7 years ago
In this question there are two equations one is centre of I circle is (-a,0) and other is (-b,0) so it is also mentioned that one of them lies inside the other. So this means either both circle work
sid
22 Points
7 years ago
Will be on negative side of x axis or will be on positive sidevof x axis .in the left side centre of both circle will be negative therefore the product of a and b will be -a *-b= positive that is ab .and if they are on positive side so both wil be positive .hence product will be >0 again. So our first answer is ab>0.And for second perpendicular distance>radius therefore a>√a2-ca2>a2-cC>0 hence proved

Think You Can Provide A Better Answer ?

Other Related Questions on Analytical Geometry

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More