SubArea: DerivativeLevel: AProject ID: 2010002002Source Problem: 9000070802Accepted: 0Clonable: 1Easy: 1Differentiate the following function. f(x)=3cosx−2f′(x)=−3sinx; x∈Rf′(x)=−3cosx; x∈Rf′(x)=3sinx−2; x∈Rf′(x)=−3sinx−2; x∈R