The lifetime, in years, of some electronic component is a continuous random variable with the density given below:
f(x)={((k)/(x⁴)), for x>=1),(0, for x<1):}
(a) Find the value of k.
(b) Compute the expected lifetime of the electronic component.
a) k = 3.
b) k = 4.
c) k = 2.
d) k = 1."