Question

program p5;
var
a,b,c : real;
begin
writeln ('Введіть 2 числа:');
readln (a,b);
c:=(exp(b)sqrt(a+b)+5*sin(3*a)/15+abs(3*b-6*a)+abs(exp(4*a)-ln(6*b))/4*cos(5*b)-sqr(a)+6);
writeln('c=',c:4:2);
end.

Answer 1

This is a Pascal program that prompts the user to input two real numbers, and then calculates a value for variable c based on a mathematical formula that involves various functions and operations. The calculated value for c is then displayed on the screen.

Here's a breakdown of the program:

Program p5;      {Program name}

var

a,b,c : real;    {Variable declaration: a, b, and c are all real numbers}

begin

writeln ('Введіть 2 числа:');   {Prints the message "Введіть 2 числа:" (which means "Enter 2 numbers" in Ukrainian)}

readln (a,b);                   {Reads in two numbers from the user and stores them in a and b}

c := (exp(b)*sqrt(a+b) + 5*sin(3*a)/15 + abs(3*b-6*a) + abs(exp(4*a)-ln(6*b))/4*cos(5*b) - sqr(a) + 6);

                               {Calculates a value for c using various functions and operations}

writeln('c=',c:4:2);            {Prints the value of c on the screen, with 4 digits before the decimal point and 2 digits after}

end.                            {End of the program}

The formula for calculating c is quite complex and involves several mathematical functions, including:

exp: Calculates the exponential of a number (i.e., e to the power of the number).

sqrt: Calculates the square root of a number.

sin: Calculates the sine of a number (in radians).

abs: Calculates the absolute value of a number.

ln: Calculates the natural logarithm of a number (i.e., the logarithm to the base e).

cos: Calculates the cosine of a number (in radians).

sqr: Calculates the square of a number.

Overall, the program is calculating a value for c based on a complicated mathematical formula, using the user's input values for a and b.