• 미분,derivative . . . . 2 matches
        이계도함수 Srch:second_derivative
        WpEn:Second_derivative
        https://proofwiki.org/wiki/Definition:Second_Derivative
       [[이계도함수판정법,second_derivative_test]]
• 안장점,saddle_point . . . . 1 match
       ''QQQ second_derivative 로는 알 수 없다는 얘기? chk''
• 오목볼록,concave_and_convex . . . . 1 match
       이하 2계도함수판정법 second_derivative_test ?? chk
• 헤세_행렬,Hessian_matrix . . . . 1 match
       두번미분과 관련. 이계도함수 or 이계미분계수. second_derivative_test (curr at [[판정법,test]])관련.

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