Mlinganyo tenguo ni aina ya mlinganyo ambayo yanalinganishwa mabadiliko mawili yanayotokea kwa wakati mmoja. Lengo ni kuona jinsi badiliko moja linavyosababisha au kuathiri badiliko la pili. Milinganyo ya namna hiyo ilitegemea Historia ya kalkulasi kwa juhudi za Isaac Newton na Gottfried Leibniz. Isaac Newton aliorodhesha aina tatu: d y d x = f ( x ) d y d x = f ( x , y ) x 1 ∂ y ∂ x 1 + x 2 ∂ y ∂ x 2 = y {\displaystyle {\begin{aligned}&{\frac {dy}{dx}}=f(x)\\[5pt]&{\frac {dy}{dx}}=f(x,y)\\[5pt]&x_{1}{\frac {\partial y}{\partial x_{1}}}+x_{2}{\frac {\partial y}{\partial x_{2}}}=y\end{aligned}}} ExpressionsinBar Maple: dsolve SageMath Xcas: desolve(y'=k*y,y) In Chapter 2 of his 1671 work Methodus fluxionum et Serierum Infinitarum,Newton, Isaac.