What is wrong in the following latex math code? The Next CEO of Stack Overflow

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What is wrong in the following latex math code?



The Next CEO of Stack Overflow












0















$$


left. begin{array}{c}
frac{NR}{K}=50
00
K=24
NRgeqslant text{600 }left( an,,initial,,guess right)
end{array} right} Rightarrow left{ begin{array}{c}
K_{min}=24
N_{min}=40
R_{max}=30
end{array} right.

left. begin{array}{c}
R_U=frac{NR}{I}
R_D=frac{NR}{J}
K=I+J
end{array} right} Rightarrow left{ begin{array}{c}
I=K-Kalpha =24-24cdot frac{1}{4}=18
J=Kalpha =24cdot frac{1}{4}=6
end{array} right.
$$
I have tried to debug this code for a long time. The editor keeps telling me there is an error "Undefined control sequence". Can anyone help me out find where the problem is? Thanks.









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    $$


    left. begin{array}{c}
    frac{NR}{K}=50
    00
    K=24
    NRgeqslant text{600 }left( an,,initial,,guess right)
    end{array} right} Rightarrow left{ begin{array}{c}
    K_{min}=24
    N_{min}=40
    R_{max}=30
    end{array} right.

    left. begin{array}{c}
    R_U=frac{NR}{I}
    R_D=frac{NR}{J}
    K=I+J
    end{array} right} Rightarrow left{ begin{array}{c}
    I=K-Kalpha =24-24cdot frac{1}{4}=18
    J=Kalpha =24cdot frac{1}{4}=6
    end{array} right.
    $$
    I have tried to debug this code for a long time. The editor keeps telling me there is an error "Undefined control sequence". Can anyone help me out find where the problem is? Thanks.









    share







    New contributor




    Songzhu Zhang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.























      0












      0








      0








      $$


      left. begin{array}{c}
      frac{NR}{K}=50
      00
      K=24
      NRgeqslant text{600 }left( an,,initial,,guess right)
      end{array} right} Rightarrow left{ begin{array}{c}
      K_{min}=24
      N_{min}=40
      R_{max}=30
      end{array} right.

      left. begin{array}{c}
      R_U=frac{NR}{I}
      R_D=frac{NR}{J}
      K=I+J
      end{array} right} Rightarrow left{ begin{array}{c}
      I=K-Kalpha =24-24cdot frac{1}{4}=18
      J=Kalpha =24cdot frac{1}{4}=6
      end{array} right.
      $$
      I have tried to debug this code for a long time. The editor keeps telling me there is an error "Undefined control sequence". Can anyone help me out find where the problem is? Thanks.









      share







      New contributor




      Songzhu Zhang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      $$


      left. begin{array}{c}
      frac{NR}{K}=50
      00
      K=24
      NRgeqslant text{600 }left( an,,initial,,guess right)
      end{array} right} Rightarrow left{ begin{array}{c}
      K_{min}=24
      N_{min}=40
      R_{max}=30
      end{array} right.

      left. begin{array}{c}
      R_U=frac{NR}{I}
      R_D=frac{NR}{J}
      K=I+J
      end{array} right} Rightarrow left{ begin{array}{c}
      I=K-Kalpha =24-24cdot frac{1}{4}=18
      J=Kalpha =24cdot frac{1}{4}=6
      end{array} right.
      $$
      I have tried to debug this code for a long time. The editor keeps telling me there is an error "Undefined control sequence". Can anyone help me out find where the problem is? Thanks.







      equations amsmath





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      Songzhu Zhang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 1 min ago









      Songzhu ZhangSongzhu Zhang

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      Songzhu Zhang is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






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      Check out our Code of Conduct.






















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