Dz,Ϊʲô΢ֿԳ?

[1.22] = 1,[4.33]=4. y=[x] ͼԲԿ϶Dz΢ġ


ЩIT˲ŶĹ?

Ҫһ̵��һԹʦ߽һҾưɣҪNaNNullһԹʦһҾưɣ


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̩չپһӣʦ1.1^{2.1}ֻҪf(x,y)=x^yf(x+\Delta x,y+\Delta y)=f(x,y)+f_{x}\Delt...


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ѧC#бҪѧC?

structPoint{publicintx,y;publicPoint(intx,inty){this.x=x;this.y=y;}}3.3C#˿ӵField֮⣬ӵ...


,ߡԼʲô...

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