表达式6: "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis equals 2sine left parenthesis, "x" plus sin left parenthesis, "x" , right parenthesis , right parenthesis left brace, "x" less than pi , right bracef2x=2sinx+sinxx<π
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表达式7: StartFraction, "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis Over StartNestedFraction, "d" NestedOver "d" "x" , EndNestedFraction "f" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis , EndFractionf2xddxf2x
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对学生隐藏该文件夹。
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表达式9: "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis equals left parenthesis, negative 1.1 plus 2 "I" , right parenthesis minus .5cosine left parenthesis, "x" , right parenthesis left brace, pi less than "x" , right bracef3x=−1.1+2I−.5cosxπ<x
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表达式10: StartFraction, "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis Over StartNestedFraction, "d" NestedOver "d" "x" , EndNestedFraction "f" Subscript, 3 , Baseline left parenthesis, "x" , right parenthesis , EndFractionf3xddxf3x
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表达式11: "c" equals rgb left parenthesis, 0 , 0 , 255 "I" , right parenthesisc=rgb0,0,255I
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表达式12: "I" equals StartFraction, left bracket, 0 , ...1 0 , right bracket Over 10 , EndFractionI=0,...1010
