Warning:mktime() expects parameter 1 to be long,string given 请教下这是什么错误 我传递的是6个参数

登陆淘宝网出现这样一段英语“Warning:mktime() [function.mktime]:It is not safe to rely on the syste Warning:mktime() expects parameter 1 to be long,string given 请教下这是什么错误 我传递的是6个参数 exp exp warning是什么意思 general warning Final Warning warning C4552:' warning C4552:' FBL WARNING matlab中用solve解方程组的问题,为何给出空矩阵,应该怎么改?>> [Xm,X0,K0]=solve('Xm/((1+Xm/X0-1)*exp(-K0))=533.34','Xm/((1+Xm/X0-1)*exp(-2*K0))=534.38','Xm/((1+Xm/X0-1)*exp(-3*K0))=566.03','Xm','X0','K0')Warning:Explicit solution cou DS_300B,警告 Extended Fabric license is expired我的SAN交换机DS_300B,最近有如下警告信息：2012/10/29-05:00:00,[SEC-1114],8333,CHASSIS,WARNING,DS_300B,JSYZBBtYGmK79tYgtAJYt4KFWtMATC3tXEXrt9HmLJFN4AEM9G [ Extended Fabric license ] is exp MATLAB求积分的数值解我的程序及运行如下：>> syms x;>> y=inline('0.579/((2*pi*0.3176)^0.5*x^1.5)*exp(-(x-0.579)^2/(2*0.3176*x))','x');>> int(x*exp(-3*x)*y(x),x,0,inf)Warning:Explicit integral could not 用matlab求二重积分[1+cos(6*pi*x+8*pi*y)]*exp(-j*2*pi*(3*x+4*y)),试了好多次貌似都有错syms x y>> double (int(int(1+cos(6*pi*x+8*pi*y)*exp(-j*2*pi*(3*x+4*y)),-inf,inf),-inf,inf))Warning:Could not attach the property of being closeto the ∫（xsinx）（arctan（e^x))dx 用matlab怎么算>> syms x; int((x*sin(x))*atan(exp(x))/(1+(cos(x))^2)) Warning:Explicit integral could not be found.> In sym.int at 58 ans = int(x*sin(x)*atan(exp(x))/(1+cos(x)^2),x) 我用一般的方法算不出 matlab 求积分>> syms x>> 1.788*x/(25+x^2)*exp(-(log(x/20)/0.316)^2)ans =447/250*x/(25+x^2)*exp(-62500/6241*log(1/20*x)^2)>> int(f,x,0,Inf)Warning:Explicit integral could not be found.> In sym.int at 58ans =int(447/250*x/(25+x^2)*(6121026901143963/ php mktime()函数错误,错误提示：Strict Standards:mktime() [function.mktime]:It is not safe to rely on the system's timezone settings.Please use the date.timezone setting,the TZ environment variable or the date_default_timezone_set() function. exp是什么意思