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[" If "(x^(4))" occurs in the "[(r^(ih))...

[" If "(x^(4))" occurs in the "[(r^(ih))/(15))" term in the expansion "],[(x^(4)+(1)/(x^(3)))" ,then "r=],[qquad (x+a)^(n)quad T_(gamma+1)=^(n)c_(gamma)x^(n-gamma)a^(r)]

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