Microprocessors - Engineering

Q1:

Consider the following library functions
  1. EXP (i.e., ex)
  2. ARCTAN (i.e. tan-1 x)
  3. SQRT (i.e., x)
  4. AES (i.e. |x|)

Which of the above are allowed in Pascal?

A All

B 1 and 3 only

C 1, 3, 4 only

D 1, 2 and 3 only

ANS:A - All

All are allowed in Pascal.