f(t)*δ(t)=f(t)
举一反三
- 针对程序段：IP(A||B||C) THEN W=W/X，对于(A,B,C)的取值，(57)测试用例能够满足MCDC(修正条件逻辑判定)的要求。 A．(F,T,T)(T,F,T)(T,F,F)(T,T,F) B．(T,F,F)(T,T,F)(F,T,T)(F,F,F) C．(T,F,F)(T,T,F)(F,T,T)(F,F,T) D．(T,F,F)(F,T,F)(F,F,T)(F,F,F)
- 下列等式不成立的是_____。 A: f(t)δ’(t)=f(0)δ’(t) B: f(t)δ(t)=f(0)δ(t) C: f(t)*δ’(t)=f ’(t) D: f(t)*δ(t)=f(t)
- 下述真值表表示的命题是（ ）。InputOutputpqrTTTTTTFFTFTTTFFTFTTTFTFTFFTTFFFT A: (qÞr)Þ(p∧q) B: (qÞr)Þ(p∨q) C: (p∨q)Þ(qÞr) D: (p∧q)Þ(qÞr)
- 【多选题】若f 1 (t) = ɛ (-t) , f 2 (t) = e t ,则f 1 (t)* f 2 (t) = A. f 1 ꞌ (t)* f 2 (–1) (t) B. f 1 (–1) (t)* f 2 ꞌ (t) C. f 1 (t-3)* f 2 (t+3) D. f 1 (–3) (t)* f 2 ꞌꞌꞌ (t)
- 以下不可能出现在or操作的真值表中的是? T F T|F T T|F F T|T T T