æ¹ç¨å¼ solve([2*x+4*y=30,x+y=12],[x,y]); 微忹ç¨å¼ atvalue(x(t),t=0,A); atvalue(diff(x(t),t),t=0,0); desolve(m*diff(x(t),t,2)=-k*x(t),x(t)); atvalue(x(t),t=0,1); atvalue(y(t),t=0,1); desolve([diff(x(t),t)=2*x(t)-y(t),diff(y(t),t)=x(t)+2*y(t)],[x(t),y(t)]); ode2(diff(f(x),x)+x*f(x)=sin(x)/x,f(x),x); ã©ãã©ã¹å¤æ laplace(sin(t),t,s); ilt(1/(s^2+1),s,t); integrate(sin(t)*exp(-s*t),t,0,inf); ç¹æ§é¢æ°ï¼æ£è¦åå¸ï¼ integrate(1
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