Is fixed input never relate with levek of output in economics

No, the level of output in economics is often related to fixed inputs, but not always. Fixed inputs refer to the resources or factors of production that cannot be easily changed in the short run, such as machinery, buildings, or land. In general, increasing the level of fixed inputs can contribute to higher levels of output, as it allows for greater production capacity. However, there are other factors that can affect output, such as variable inputs (such as labor or raw materials), technology, or market conditions. Additionally, there may be diminishing returns to fixed inputs, wherein increasing their quantity may lead to diminishing increases in output. So while fixed inputs can impact output, their relationship is not always direct or linear.