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>>>hindi k dn yan alam<<<
y = kn / (1 + n2)First, let's express it with negative exponents:y = kn * (1 + n2)-1Then apply the chain rule:dy|dn = k(1 + n2)-1 - kn(1 + n2)-2 * 2nAnd simplify:dy|dn = k / (1 + n2) - 2n / kn(1 + n2)
-14
k=thousand so 14 thousand or 14000
If: k/14 + 9 = 13 Then: k = 56