Posted by Alex on Monday, December 10, 2012 at 6:18pm.
y = sqrt (x+1) + sin x I assume radians not degrees - .5
= sqrt(1.05) + sin (.05) - .5
first the (1.05)^(1/2)
well if s = t^.5
ds/dt = .5 t^-.5
ds = .5 t^-.5 dt
s (t+dt) = s(t) + .5 dt/sqrt t
here t = 1 and dt = .05
so
sqrt(1.05) = 1 + .5(.05)/1
sqrt(1.05) = 1 + .025 = 1.025
now for small x, sin x = x
so sin .05 = .05
so
1.025 + .05 - .5
= .575
Thank you very much. This problem was giving me too much stress.
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