17:["$","span",null,{"className":"math-inline-trailing-punctuation","children":"，"}] 18:["$","span","|\\boldsymbol a|=3-5",{"className":"math-inline-cluster","children":[["$","span",null,{"className":"math-formula math-formula--inline structured-inline-math","children":["$","span",null,{"className":"math-formula__inline-viewport","dangerouslySetInnerHTML":{"__html":"

|\\boldsymbol a|=3

"}}]}],["$","span",null,{"className":"math-inline-trailing-punctuation","children":"，"}]]}] 19:["$","span","|\\boldsymbol b|=1-7",{"className":"math-inline-cluster","children":[["$","span",null,{"className":"math-formula math-formula--inline structured-inline-math","children":["$","span",null,{"className":"math-formula__inline-viewport","dangerouslySetInnerHTML":{"__html":"

|\\boldsymbol b|=1

"}}]}],["$","span",null,{"className":"math-inline-trailing-punctuation","children":"，"}]]}] 1a:["$","span","|\\boldsymbol c|=4-9",{"className":"math-inline-cluster","children":[["$","span",null,{"className":"math-formula math-formula--inline structured-inline-math","children":["$","span",null,{"className":"math-formula__inline-viewport","dangerouslySetInnerHTML":{"__html":"

|\\boldsymbol c|=4

"}}]}],["$","span",null,{"className":"math-inline-trailing-punctuation","children":"，"}]]}] 1b:["$","span","，则 -10",{"children":"

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