Mumwe wevaOxford Calculators wezana ramakore rechi14, William Heytesbury, asina differential calculus uye pfungwa yemiganhu, akasarudza kuyera kumhanya kwechimbichimbi "nenzira yaizotsanangurwa ne[muviri] kana... ikafambiswa zvakaenzana padanho rakaenzana rekumhanya kwainofambiswa panguva iyoyo yakapihwa".Heytesbury nevamwe vakaona maths kuti nzvimbo yakafukidzwa nemuviri uri kuita kufamba kwakaringana kwakakurumidza (nhasi inogadziriswa nekubatanidzwa), vachiti "muviri unofamba zvakaenzana kuwana kana kurasikirwa kuti kuwedzera [kwekumhanya] kuchapfuura mune imwe nguva yakapihwa [kure] zvachose pasina kuenzana neicho chaizofamba kana chaifamba chichienderera nguva imwechete nedanho repakati [rekumhanya]". Oresme kuParis uye Giovanni Casali wekuItaly vakazvimiririra vakapa huwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu hwehuwandu
differential calculus uye pfungwa yemiganhu