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若f(x)是连续的奇函数,则ʃf(x)dx=0 若f(x)是连续的偶函数,则ʃf(x)dx=2ʃf(x)dx 若f(x)在[a,b]上连续且恒正,则ʃf(x)dx>0 若f(x) 在[a,b]上连续且ʃf(x)dx>0,则f(x)在[a,b]上恒正
f(0)+f(2)<2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1) f(0)+f(2)>2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1) f(0)+f(2)>2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1) f(0)+f(2)>2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)>2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)>2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1) f(0)+f(2)>2f(1)
f(0)+f(2)<2f(1) f(0)+f(2)≤2f(1) f(0)+f(2)≥2f(1) f(0)+f(2)>2f(1)