45. How do you use error function erf or complementary error function erfc in Matlab to calculate the probability of x > -1 if the random variable x follow standard normal distribution? It is known that the probability density function follows 1 f () = V27 exp An error function is defined as 2 erf(b) = exp(-x2) dx and complementary error function is 2 erfc(b) = TJ exp(-x2) dx (a) 1-erf(-1) (b) erf(1/V2)/2+1/2 (c) erfc(-1) /2 (d) erfc(-1/V2) (e) erfc(-1/2)/2