设函数f(x)和g(x)在闭区间[a,b]上连续,则
设函数f(x)和g(x)在闭区间[a,b]上连续,则A若∫(a,b)f(x)dx=0,则在[a,b]上f(x)≡0B若∫(a,b)f(x)dx=∫(a,b)g(x)dx则...
设函数f(x)和g(x)在闭区间[a,b]上连续,则A若∫(a,b)f(x)dx=0,则在[a,b]上f(x)≡0B若∫(a,b)f(x)dx=∫(a,b)g(x)dx则在[a,b]上f(x)≡g(x)C若a<c<d<b则∫(c,b)f(x)dx<=∫(a,b)g(x)dxD若a<c<d<b,且f(x)>=0则∫(c,d)f(x)dx<=∫(a,b)g(x)dx
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