\[Let int_0^x sqrt{1-left(y^{prime}(t)right)^2} d t=int_0^x y(t) d t, 0 leq x leq 3, y geq 0, y(0)=0 . Then at x = 2, y’’ + y + 1 equal to (1)1, (2)2, (3)√2, (4) 1/2\] – Copy

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