the value of c so that all real x, the vectors cxi-6j+k,xi+2j+2c k make an obtuse angle are
mansi dabriwal , 9 Years ago
Grade 12th pass
Vectors> the value of c so that all real x, the ve...
1 Answers
ng29
Last Activity: 9 Years ago
there will not be value of c it will be interval
for obtuse angle make dot product product between the vectors negative
we get cx2 -12+2c
c 2+2)
as x belongs to real u can find out the interval of c easily
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