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x(cosx)^2的原函数 - 搜狗问问
Web答:1) y'=y-2x/y yy'=y^2-2x 2yy'-2y^2=-4x (y^2)'-2y^2=-4x 设y^2=t t'-2t=-4x 特征方程a-2=0,解得a=2 所以:齐次方程t'-t=0的通解为t=Ce^(2x) t'-2t=-4x的特征方程设为t*=mx+n t*'=m 代入得:m-2mx-2n=-4x 所以: m-2n=0-2m=-4 解得:m=2,n=1 所以:特解为t*=2x-1 所以:通解为t=Ce^(2x)+2x-1=y^2 所以:通解为y^2=Ce^(2x)+2x-1 2) y'=-y+x+1 y'+y=x+1 特 … WebMar 1, 2024 · To find solutions of A x = 2 x, look for vectors in the nullspace of A − 2 I : So a vector x in the nullspace of A − 2 I satisfies x 2 = x 3 and x 1 = x 3. Hence x is a multiple of ( 1, 1, 1). You are, of course, correct that the problem is asking for the eigenspace of A corresponding to the eigenvalue 2. But the question can be posed (and ... buy recreational weed in massachusetts
Gráfico y=2x Mathway
Webcos2x的原函数是什么. 扫码下载作业帮. 搜索答疑一搜即得. 答案解析. 查看更多优质解析. 解答一. 举报. cos2x= (cosx)^2- (sinx)^2. 如果指导数的话原函数为sin2x/2. Web设f(x)在[a,b]上连续,则由 曲线y=f(x),x轴及直线x=a,x=b围成的曲边梯形的面积函数(指代数和——x轴上方取正号,下方取负号)是f(x)的一个原函数.若x为时间变量,f(x)为直线运 … WebApr 10, 2024 · 知乎,中文互联网高质量的问答社区和创作者聚集的原创内容平台,于 2011 年 1 月正式上线,以「让人们更好的分享知识、经验和见解,找到自己的解答」为品牌 … ceramic outdoor fire containers