1.

A ( a e, 0), B( - ae, 0)aretwopoints.Theequationto thelocusofPsuchthatPA - PB = 2ais

Answer»

` ( X ^ 2 ) /( a ^ 2 )+(y ^ 2 ) /( a ^ 2 ( 1 - E^ 2 ))= 1`
`( x ^ 2 ) /(a ^ 2 )- (y^ 2 ) /( a ^ 2 (1 -e ^ 2 ) )=1 `
` ( x ^ 2 ) /( a ^ 2 )+( y^ 2 ) /( a ^ 2( 1 +e ^ 2 )) = 1`
` ( x^ 2 ) /( a ^ 2 )- ( y^ 2 ) /( a ^ 2( 1 +e ^ 2 )) = 1 `

ANSWER :A


Discussion

No Comment Found

Related InterviewSolutions