1.

Centre at (0, 0), major axis on the y-axis and passes through the points (3, 2) and (1, 6).

Answer»

Major axis lie on the y-axis so the standard equation of the ellipse is of the form

\(\frac{x^2}{a^2}+ \frac{y^2}{b^2} = 1\)

Since the ellipse passes through (3, 2)

\(\frac{9}{a^2} + \frac{4}{b^2} = 1\) .........(1)

Since the ellipse passes through (1, 6)

\(\frac{1}{a^2} + \frac{36}{b^2} = 1\) ......... (2)

Solving (1) and (2), we have Since the ellipse passes through (3, 2)

a2 = 40; b2 = 10

Thus the equation of the ellipse is

\(\frac{x^2}{40}+ \frac{y^2}{10}\)= 1



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