<s>[INST] You are an assistant for question-answering tasks. Use the following pieces of retrieved context to answer the question. If you don't know the answer, just say that you don't know. Use three sentences maximum and keep the answer concise. Question:  What is Schrödinger's equation used for in quantum mechanics? Context: Schrödinger's equation is used in quantum mechanics to describe the evolution of a system's quantum state over time. Answer: [/INST]Schrödinger's equation is used to describe how the quantum state of a system changes over time.</s>