英语翻译where A is the proportion of i’s relations invested in the relationship with q,B represents the marginal strength of the relationship between alter j and alter q

英语翻译where A is the proportion of i’s relations invested in the relationship with q,B represents the marginal strength of the relationship between alter j and alter q
英语翻译
where A is the proportion of i’s relations invested in the relationship with q,
B represents the marginal strength of the relationship between alter j and alter q

英语翻译where A is the proportion of i’s relations invested in the relationship with q,B represents the marginal strength of the relationship between alter j and alter q
这个是导数么.还是函数啊.i和j和q是什么啊?i是复数那个?还是只是一个定值.
我现在能得出的就是：
如果A和i成正比,且A=q·i ,设q=B·j ,求B的临界值?