SubArea: DerivativeLevel: BProject ID: 9000070703Accepted: 1Differentiate the following function. f(x)=sinx−cosxf′(x)=sinx+cosx2sinx−cosx; x∈(π4+2kπ;5π4+2kπ), k∈Zf′(x)=sinx+cosx2sinx−cosx; x∈[π4+2kπ;5π4+2kπ], k∈Zf′(x)=sinx−cosx2sinx−cosx; x∈[π4+2kπ;5π4+2kπ], k∈Zf′(x)=sinx−cosx2sinx−cosx; x∈(π4+2kπ;5π4+2kπ), k∈Z