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তপন স্যার
HSC - পদার্থ বিজ্ঞান ১ম পত্র
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অধ্যায়-০২ঃ ভেক্টর
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সমন্বিত টপিক
A
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=
3
i
^
−
2
j
^
+
k
^
,
B
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=
2
i
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−
4
j
^
−
3
k
^
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C
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=
−
i
^
+
2
j
^
+
2
k
^
\overrightarrow{\mathrm{A}}=3 \hat{\mathrm{i}}-2 \hat{\mathrm{j}}+\hat{\mathrm{k}}, \overrightarrow{\mathrm{B}}=2 \hat{\mathrm{i}}-4 \hat{\mathrm{j}}-3 \hat{\mathrm{k}}, \overrightarrow{\mathrm{C}}=-\hat{\mathrm{i}}+2 \hat{\mathrm{j}}+2 \hat{k}
A
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3
i
^
−
2
j
^
+
k
^
,
B
=
2
i
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−
4
j
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−
3
k
^
,
C
=
−
i
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+
2
j
^
+
2
k
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(i)
∣
C
⃗
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=
?
(ii)
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A
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B
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C
⃗
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(iii)
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2
A
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3
B
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5
C
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=
?
\begin{array}{l}\text{(i) } |\vec{C}|= \text{ ?}\\\text{(ii) } |\vec{A}+\vec{B}+\vec{C}|= \text{ ?}\\\text{(iii) } |2 \overrightarrow{\mathrm{A}}-3 \overrightarrow{\mathrm{B}}-5 \overrightarrow{\mathrm{C}}|= \text{ ?}\end{array}
(i)
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C
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?
(ii)
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A
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B
+
C
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=
?
(iii)
∣2
A
−
3
B
−
5
C
∣
=
?
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