\( f(x)=\sqrt{x+3} \)
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The Deep Dive
Did you know that functions like \( f(x) = \sqrt{x+3} \) first appeared in the study of roots and powers by mathematicians in ancient Greece? They were important in understanding geometric properties and solving equations that involve measurements. The square root function itself has roots in the practical need to address geometric problems, such as determining the length of the sides of a right triangle! To master the function \( f(x) = \sqrt{x+3} \), it's important to remember a common mistake: forgetting the domain! Since we can't take the square root of a negative number in the real number system, the expression inside the square root, \( x + 3 \), must be greater than or equal to zero. Therefore, the domain is \( x \geq -3 \). So, make sure to keep that in mind as you explore this function!