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Q25: <span class="ql-formula" data-value="\begin{aligned}( 5,2 , - 2
Q26: <span class="ql-formula" data-value="\mathbf { u } =
Q46: <span class="ql-formula" data-value="\sin 75 ^ { \circ
Q53: <span class="ql-formula" data-value="\frac { \sin \alpha -
Q59: <span class="ql-formula" data-value="\cos \frac { 7 \pi
Q133: Use the coding matrix <span
Q159: <span class="ql-formula" data-value="( 5 , - 5
Q193: <span class="ql-formula" data-value="94 ^ { \circ }"><span
Q196: <span class="ql-formula" data-value="- 250 ^ { \circ
Q204: <span class="ql-formula" data-value="60 ^ { \circ }"><span