If P- - 2- - 3- - k- and Q- - 2- - 5- - 2k-Find i P- -Q-iI 3P- - 2 Q-

(i) #160; : #160; P⃗+Q⃗ = (2î+3ĵ k̂)+(2î 5ĵ+2k̂) #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; #160; # ...

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Vector Component

If P⃗ = 2î ...

Question

If $\to P = 2^i + 3^j -^k$ and $\to Q = 2^i - 5^j + 2^k$ .Find (i) $\to P + \to Q$
(iI) $3 \to P - 2 \to Q$

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Solution

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∣ ∣ ∣ ∣ \begin{matrix} \to p . \to p & \to p . \to q & \to p . \to r \to p . \to q & \to q . \to q & \to q . \to r \to p . \to r & \to r . \to q & \to r . \to r \end{matrix} ∣ ∣ ∣ ∣

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P

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6

| \to p | = | \to q | = 2, (\to p, \to q) = π / 3

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\sqrt{28}, \sqrt{52}

\sqrt{112}, \sqrt{48}

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