yeye t anakuambia t hat t ni NULL ambayo ni njia to kupata t yeye deri\vative). t hapa kuna otsheria zake sijuit kujua kwa nini hanget kwenda juu ya i(3:t).####[['NULL', 'Instructor', 'NEU'], ['deri\x0bat', 'Mathematical_Related_Concept', 'NEU'], ['t', 'Mathematical_Related_Concept', 'NEU'], ['nx^(n-1', 'Mathematical_Related_Concept', 'NEU'], ['NULL', 'Mathematical_Related_Concept', 'NEU']]