RTU engineering math 1 previous year questions 2007 previous year question

The period of a sample pendulam with small oscillations is given by -

B.Tech, Engineering Math -1 $T = 2\mathrm{\pi }\sqrt{\left(\raisebox{1ex}{$\mathrm{l}$}\!\left/ \!\raisebox{-1ex}{$\mathrm{g}$}\right.\right)}$
If T is computed using l =8m and g = 9.8m/sec2, The approximate error in T if the true values are l = 8.05m and g = 9.81m/sec2.
Find the percentage eror in T.

Trace the curve

B.Tech, Engineering Math -1 $y^2(a+x) = x^2(a-x)$

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