摘要：
求二元二次方程的偏导数： > fun=expression(x^2+y^2+x*y)> D(fun,"x")2 * x + y> D(fun,"y")2 * y + x> D(D(fun,"x"),"x")[1] 2> D(D(fun,"x"),"y")[1] 1 继续：要求函数x 2 +y 2 + 阅读全文
摘要：
Some biases in the standard rnaseq analysis 有参拼接：Stringtie 、 Cufflinks and Traph flow network algorithm ： maximal and minimal methods respectively 无参组 阅读全文