COMPUTER PROGRAMMING FUNDAMENTALS
WHAT IS PROGRAMMING
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The set of all real numbers less than 5
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The set of all natural numbers greater than 5
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The set of all real numbers greater than or equal to 5
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None of the above
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Detailed explanation-1: -The domain of function f defined by f(x) = 1√(( | y + 1 | ))
Detailed explanation-2: -Let y = f(x) be a function with an independent variable x and a dependent variable y. If a function f provides a way to successfully produce a single value y using for that purpose a value for x then that chosen x-value is said to belong to the domain of f.
Detailed explanation-3: -Let us consider an example, f(x) = x2. f(-x) = (-x)2 = x2 for all values of x, as the square of a negative number is the same as the square of the positive value of the number. This implies f(-x) = f(x), for all x. Hence, f(x) = x2 is an even function.
Detailed explanation-4: -Find the domain by listing all the x values from the relation. Find the range by listing all the y values from the ordered pairs. Repeated values within the domain or range don’t have to be listed more than once. In order for a relation to be a function, each x must correspond with only one y value.