the value of c so that for all real x the vectors cxi- 6j +3k and xi +2j + 2cxk make an obtuse angle are-

Question

Arun · Answer

there will not be value of c it will be interval for obtuse angle make dot product product between the vectors negative we get cx 2 -12+3cx as x belongs to real u can find out the interval of c easily

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the value of c so that for all real x the vectors cxi- 6j +3k and xi +2j + 2cxk make an obtuse angle are-

the value of c so that for all real x the vectors
cxi- 6j +3k and xi +2j + 2cxk make an obtuse angle are-

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