The integral sign represents integration. The symbol , called the differential of the variable , indicates that the variable of integration is . The function is called the integrand, the points and are called the limits (or bounds) of integration, and the integral is said to be over the interval , called the interval of integration.. A function is said to be if its integral over its domain is finite. If limits are specified, the integral is called a definite integral.
tHe intEgrAl sign reprEsENts inteGrATIon. tHe SymboL , CalLed the dIfFErentiaL oF THe variaBLe , INdicates tHAT The vArIabLe of iNTeGration is . The function is called the iNtegrANd, The PoInts and are calLEd the limits (or bOunDs) of InteGratIOn, AnD tHE IntEgrAL is said to Be over tHe iNtErval , cAlLEd The iNterval OF integratIon.. a FunctIon iS SaiD to be if iTS inTeGRAL over Its dOMaIn is FInIte. iF limIts are sPecifiED, the Integral Is CalLeD a deFinIte iNTeGrAl.