(adsbygoogle = window.adsbygoogle || []).push({}); ellipse - urgent help needed

Hi there.. i have an exam tomorrow morning and can't figure this out.

ellipse defined by 3x^2 + 2y^2 = k

length of major axis is 6

find k?

ok.. i know that the major axis = 2a, so in this case a = 3

the general form of an ellipse is

x^2/a^2 + y^2/b^2 = 1

???? where do i go now ????

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# Ellipse - help needed

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