3 years ago

Please help...............

Mathematics

1 answer:

Korvikt [17]3 years ago

5 0

Answer:

-|b| < b

Step-by-step explanation:

-b where?

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The value of q are 0.781,-1.281.

Step-by-step explanation:

Given : Two vectors $A=i+j+kq$ and $B=iq-2j+2kq$ are perpendicular to each other.

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Solution :

When two vectors are perpendicular to each other then their dot product is zero.

i.e. $\vec{A}\cdot \vec{B}=0$

Two vectors $A=i+j+kq$ and $B=iq-2j+2kq$

$(i+j+kq)\cdot (iq-2j+2kq)=0$

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$q-2+2q^2=0$

$2q^2+q-2=0$

Using quadratic formula,

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$q=\frac{-1+\sqrt{17}}{4},\frac{-1-\sqrt{17}}{4}$

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