60. First column elements of the Routh’s tabulation are 3, 5, 3/4, 1/2 and 2. It means that there is/are: (a) One root in the left half of the s-plane (b) Two roots in the half of the s-plane (c) Two root in the right half of the s-plane (d) One root in the right half of the s-plane
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