Error:Can't place pins assigned to pin location Pin_K22 (IOPAD_X41_Y19_N14) 为什么呢?

Error:Can't place pins assigned to pin location Pin_K22 (IOPAD_X41_Y19_N14) 为什么呢? Error:Can't place multiple pins assigned to pin location Pin_101 (IOPAD_X34_Y18_N21)我是cyclone III系列 Assignments----Device----Device and pin option-----(选项卡)Dual purpose pin 将nCE0　的设置改为：　use as regular IO后仍然出现这个错误,加入改回去又会出现以下两个错误：Error: Can't place multiple pins assigned to pi Error:Can't place pins assigned to pin location Pin_K22 (IOPAD_X41_Y19_N14)1我在分配DE0的管脚到VGA上时 出现这种错误 该怎么办? error,can't initialize plugins directory,please try again I can't go to connit an error again Error (10327):VHDL error at Vhdl1.vhd(16):can't determine definition of operator x=4*sin(2*pi*0.01*t).*sin(2*pi*3*t)+2*cos(pi*t*t/4);在matlab中怎样表达运行出现错误：Error using ==> mtimesInner matrix dimensions must agree. error!can't vote so fast,you can try again just a minute这句话是什么意思 Error:Unexpected MATLAB operator.clear all;t=[pi/2:pi/5:5*pi/2];ti=[pi/2:pi/20:5*pi/2];d=[0.209 0.157 0.055 0.009 -0.187 -0.251 -0.192 -0.017 0.060 0.118 0.209];di=-0.0005245*ti.^8+0.01996*ti.^7-0.3211*ti.^6+2.84*ti.^5-15.05*ti.^4+48.81*ti.^3-94.34*t Heaven is a place nearby,but i can't see. robots can't take the place of people for___ can't.find.he.the.place 连词成句 在Matlab里,我的t=0:0.005:1; sig=80*sin(10*pi*t)*sin(60*pi*t);运行不了Error using ==> mtimesInner matrix dimensions must agree.此为系统提示,为什么 matlab7中 运行错误matlab7中 >> t=0:pi/150:3*pi; >> y1=cos(t)*exp(-t); 为什么一运行就提示 Error using ==> mtimesInner matrix dimensions must agree. matlab 中出现Error:Missing variable or functiont=0:0.01:2;y1=sin(2*pi*t);y2=sin(16*pi*t);y=y1.*y2;plot(t,y)请问这是错在那? Matlab程序编写和出图u(x,t) = 10 + 5*cos(2*pi*t/T) + (1 + cos(2*pi*t/T))*x/5 + sum{n=1 to n=N} ( (10/pi*n [(T/2*pi) * sin(2*pi*t/T) - (25/(pi*n))^2 cos(2*pi*t/T)] * sin(pi*n*x/25) )I need it once with T=1 and once with T=365.Also for N you can You can see that great changes（）there. A take place B t ake the place