We recognize some of you may have had minimal exposure to the dirac delta function. see giffiths sec. 1.5 for a review or introduction.) a) [6 pts] evaluate the following integrals (i) j (2x + 3)á»(z)dr (ii) jpe(x + 1)dx 2 0 b) 4 pts what are the dimensions (units) of the one-dimensional delta function 5(x)? in other words: is î´(x) unitless or does it carry the dinensã­ns ,m (meter), or some other unit?