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Question
Choose correct alternatives:
If slope of one of the lines ax2 + 2hxy + by2 = 0 is 5 times the slope of the other, then 5h2 = ______
Options
ab
2ab
7ab
9ab
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Solution
If slope of one of the lines ax2 + 2hxy + by2 = 0 is 5 times the slope of the other, then 5h2 = 9ab.
Notes
The answer in the textbook is incorrect.
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