Normal. The two major sounds heard in the normal heart sound like âlub dubâ. The â lubâ is the first heart sound, commonly termed S1, and is caused by turbulence caused by the closure of mitral and tricuspid valves at the start of systole. The second sound,â dubâ or S2, is caused by the closure of aortic and pulmonic valves, marking the end of systole.
A subscript or superscript is a character (number, letter or symbol) that is (respectively) set slightly below or above the normal line of type. It is usually smaller than the rest of the text. Subscripts appear at or below the baseline, while superscripts are above.
They are functions. They are nothing more than keys on your calculator, which serve purposes in higher mathematics. Also, you wrote the parenthesis in the wrong place. It is sin(), not (sin). The parenthesis indicate the argument of the function.sin(A) does not mean sin multiplied by A, it means you take the value for A and send it through the sin() function, and you get an output.Also, it is sin() rhymes with pine, it does not rhyme with tin. Parenthesis in general mean do that portion of the math first.he parenthesis indicate the argument of the function. sin(A) does not mean sin multiplied by A, it means you take the value for A and send it through the sin() function, and you get an output. Also, it is sin() rhymes with pine, it does not rhyme with tin.