<prompt> Tšebeliso e tloaelehileng haholo ea li-derivative ho calculus ke efe?nan  <response>: Instruction in English: What is the most common use of the derivative in calculus? . Response in English: In calculus, the most common use of the derivative is to measure the rate of change of a function with respect to one of its variables at a given point. This is often referred to as the instantaneous rate of change or the slope of the tangent to the function at that point. Derivatives can be used in a variety of contexts, such as in the study of motion, optimization problems, and modeling rates of change in fields such as economics, chemistry and physics. . Response in Sesotho: Ho calculus, tsebeliso e tloaelehileng haholo ea derivative ke ho lekanya sekhahla sa phetoho ea tsebetso mabapi le e ngoe ea mefuta ea eona sebakeng se itseng. Hangata sena se bitsoa sekhahla sa hang-hang sa phetoho kapa moepa oa tangent mosebetsing oa nako eo. Litlhahiso tse ling li ka sebelisoa maemong a fapaneng, joalo ka thutong ea motsamao, mathata a ho ntlafatsa, le litekanyetso tsa ho etsa mohlala oa liphetoho mafapheng a joalo ka moruo, khemistri le fisiks. 