6+6sin(4x)=3 [-5,-2]这题我做到x=arcsin(-1/2)/4 = -0.1309之后我减派取值...怎么弄都不对...这周期是派/2没问题啊...

6+6sin(4x)=3 [-5,-2]这题我做到x=arcsin(-1/2)/4 = -0.1309之后我减派取值...怎么弄都不对...这周期是派/2没问题啊...
6+6sin(4x)=3 [-5,-2]
这题我做到x=arcsin(-1/2)/4 = -0.1309
之后我减派取值...怎么弄都不对...这周期是派/2没问题啊...

6+6sin(4x)=3 [-5,-2]这题我做到x=arcsin(-1/2)/4 = -0.1309之后我减派取值...怎么弄都不对...这周期是派/2没问题啊...
6sin(4x)=-3,sin(4x+2kπ)=-1/2,4x+2kπ=-π/6或者-5π/6,结出x,根据区间就可以求出k的可能取值,这时x的值就出来了
你应该减去派π/2,不是π