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Q94: A mass hangs from a spring
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Q286: <span class="ql-formula" data-value="\frac { \cot x }
Q313: <span class="ql-formula" data-value="\sin ^ { - 1
Q330: <span class="ql-formula" data-value="7 \cot ^ { 2
Q375: <span class="ql-formula" data-value="\sin ^ { 2 }
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Q399: <span class="ql-formula" data-value="\frac { \sin ^ {
Q461: <span class="ql-formula" data-value="3 ^ { 1 +