1.

यदि `(ds)/(dt)=2t^(2)+t-1` तथा s =0 जब t =0 , तब s तथा t में संबंध ज्ञात कीजिए ।

Answer» Correct Answer - `s=(2)/(3)t^(3)+(1)/(2)t^(2)-t`
`(ds)/(dt)=2t^(2)+t-1implies ds=(2t^(2)+t-1)dt`
`implies int ds =int (2t^(2)+t-1)dt`
`implies s=(2)/(3)t^(3) +(1)/(2)t^(2)-t`
t=0 पर s=0


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