How do you evaluate the integral #int e^xdx# from #-oo# to 1? Calculus Introduction to Integration Definite and indefinite integrals 1 Answer Alexander Jul 24, 2016 #int_(-∞)^(1) e^x dx = e# Explanation: Since #e^x# doesn't really have a discontinuity in the interval, we can simply evaluate the definite integral in a normal procedure. #int_(-∞)^(1) e^x dx = [e^x]_(-∞)^(1) = [e - e^(-∞)] = e-0 = e# Answer link Related questions What is the difference between definite and indefinite integrals? What is the integral of #ln(7x)#? Is f(x)=x^3 the only possible antiderivative of f(x)=3x^2? If not, why not? How do you find the integral of #x^2-6x+5# from the interval [0,3]? What is a double integral? What is an iterated integral? How do you evaluate the integral #1/(sqrt(49-x^2))# from 0 to #7sqrt(3/2)#? How do you integrate #f(x)=intsin(e^t)dt# between 4 to #x^2#? How do you determine the indefinite integrals? How do you integrate #x^2sqrt(x^(4)+5)#? See all questions in Definite and indefinite integrals Impact of this question 1322 views around the world You can reuse this answer Creative Commons License