If the length of the latus rectum of y2 = 8kx is 4 find k

1.	If the length of the latus rectum of y2 = 8kx is 4 find k
Answer» Compare y² = 8kx with y² = 4ax We get 4a = 8k ⇒ a = 2k Given length of LR = 4 4a = 4 ⇒ 8k = 4 ⇒ k = \(\frac{1}{2}\)

Answer»

Compare y² = 8kx with y² = 4ax

We get 4a = 8k ⇒ a = 2k

Given length of LR = 4

4a = 4 ⇒ 8k = 4 ⇒ k = \(\frac{1}{2}\)

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If the length of the latus rectum of y2 = 8kx is 4 find k

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