函数f(x)=x+1(0≤x≤π)的正弦级数∑n=1∞bnsinnx在x=-(1/2)处收敛于____．

函数f(x)=x+1(0≤x≤π)的正弦级数∑n=1∞bnsinnx在x=-(1/2)处收敛于____．
【正确答案】：-(3/2)．