1.

Show that the circles x^(2) +y^(2) + 2ax + c=0 and x ^(2) + y^(2)+ 2by + c=0to touch each other if(1)/(a^(2)) + (1)/( b^(2)) = (1)/( c )

Answer»


Answer :i.e. if ` (1)/( a^(2)) + (1)/( B^(2)) = (1)/( C ) ` which is TRUE


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