1. What will be the output of the following program? #include<iostream.h> double BixFunction(double, double, double = 0, double = 0, double = 0); int main() { double d = 2.3; cout<< BixFunction(d, 7) << " "; cout<< BixFunction(d, 7, 6) << endl; return 0; } double BixFunction(double x, double p, double q, double r, double s) { return p +(q +(r + s x) x) x; }