NCERT Class XI Mathematics - Conic Sections - Solutions
© examsnet.com
Question : 46
Total: 71
Centre at (0, 0), major axis on the y-axis and passes through the points (3, 2) and (1, 6)
Solution:
Since the major axis is along y-axis.
∴ The equation of ellipse in standard form is
+
= 1
Since the ellipse passes through the point (3, 2)
∴
+
= 1 ... (i)
Also, the ellipse passes through point (1, 6)
∴
+
= 1 ... (ii)
Solving (i) and (ii), we geta 2 = 40 and b 2 = 10
Hence the required equation of ellipse is
+
= 1.
∴ The equation of ellipse in standard form is
Since the ellipse passes through the point (3, 2)
∴
Also, the ellipse passes through point (1, 6)
∴
Solving (i) and (ii), we get
Hence the required equation of ellipse is
© examsnet.com
Go to Question: