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a এর মান কত হলে aˆi-2ˆj+ˆk এবং 2aˆi-aˆj-4ˆk ভেক্টরদ্বয় পরস্পর লম্ব হবে?

Created: 3 years ago | Updated: 11 months ago
Updated: 11 months ago
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