Many functions do not have elementary antiderivatives and as a result, definite integrals cannot be evaluated exactly using the fundamental theorem of calculus. in each case determine if the definite integral can or cannot be evaluated exactly using the fundamental theorem. (a) 8 e−x2 dx 3 the fundamental theorem can be used. the fundamental theorem cannot be used. (b) 5 ex x dx 4 the fundamental theorem can be used. the fundamental theorem cannot be used. (c) 9 ex·cosx dx 3 the fundamental theorem can be used. the fundamental theorem cannot be used. (d) 13 1 lnx dx 8 the fundamental theorem can be used. the fundamental theorem cannot be used.