Define signal x(t) = u(t−1)−u(t−2.5)−2δ(t− 4)+δ(t −6). (a) sketch y(t) = $ t −[infinity] x(τ )dτ . (b) describe a simple change that can be made to the right-most delta function in x(t) so that y(t) = $ t −[infinity] x(τ )dτ has finite energy. (c) sketch z(t) = $ [infinity] t x(τ )dτ . (d) determine real constants a and b so that w(t) = x ? t−a b ? has a region of support

What term best describes a line ans a point that lie in the same plane

Complete the steps to find 4.830 ÷ 5

Statements reasons 1. ab ? cd; ad ? bc 1. given 2. ac ? ac 2. reflexive property 3. ? adc ? ? cba 3. ? 4. ? dac ? ? bca; ? acd ? ? cab 4. cpctc 5. ? dac and ? bca are alt. int. ? s; ? acd and ? cab are alt. int. ? s 5. definition of alternate interior angles 6. ab ? cd; ad ? bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3?