Question: C++ programming Given the following recursive function ( use type long because the int type is not big enough to hold the output number) long

C++ programming

C++ programming Given the following recursive function ( use type long because

Given the following recursive function ( use type long because the int type is not big enough to hold the output number) long f(int n) { if(n==1) return 2; else return 2*f( n-1); } a. What is the run-time of this recursive function? b. Write a program to find and display the value of f( 20 ), and display its run-time

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