Integration is often define as reverse of differentiation, for example.
IF dy/dx=nxⁿ⁻¹
Therefore we said ∫nxⁿ⁻¹ dx
= nxⁿ⁻¹⁺¹/n+1-1 = nxⁿ/n = xⁿ
Because if xⁿ was integrated is = xⁿ⁺¹/n+1
n+1Xⁿ⁺¹⁻¹/n+1-1= n+1xⁿ/n = xⁿ
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The statement above prove that Integration is reverse of differentiation.