-y - y/1-y +1

-y - y/1-y +1 y (3y^2+8y-3)-6y(3y+2y-1)+9y (x+y)(x-y)+4(y-1) (y平方+2y)(y平方+2y+2)+1 方程y''=(1+y'*y')/2y的通解 (y+3)(4y-1) 微分方程y'-y=1 for(y=1;y y'=1+y^2 （1+y）^y求导 for (y=1;y -1+y+20y^2 matlab中y(:,y(:,1: y+y=1/cosx y'/y=1/x 通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9 (y+1)(y²-y+1)+y(1+y)(1-y) [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y