$\text { Find } \lim _{h \rightarrow 0} \frac{f(x+h)-f(x)}{h} \text { for } f(x)=\sqrt{x-7} \text {. }$

question 83

Multiple Choice

$\text { Find } \lim _{h \rightarrow 0} \frac{f(x+h) -f(x) }{h} \text { for } f(x) =\sqrt{x-7} \text {. }$

• A) \( \frac{1}{7 \sqrt{x-7}} \)
• B) \( \frac{1}{2 \sqrt{x-7}} \)
• C) \( \frac{\sqrt{x-7}}{2} \)
• D) \( \sqrt{x-7} \)
• E) limit does not exist

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