Math  /  Algebra

QuestionComposites Involving Exponential Functions Find the domain and range for each of the functions in Exercis 21-24.
21. f(x)=12+exf(x)=\frac{1}{2+e^{x}}
22. g(t)=cos(et)g(t)=\cos \left(e^{-t}\right)
23. g(t)=1+3tg(t)=\sqrt{1+3^{-t}}
24. f(x)=31e2xf(x)=\frac{3}{1-e^{2 x}}

Studdy Solution
نحدد مدى كل دالة:
- مدى f(x)=12+ex f(x)=\frac{1}{2+e^{x}} هو جميع الأعداد الحقيقية الموجبة الأقل من 12 \frac{1}{2} . - مدى g(t)=cos(et) g(t)=\cos \left(e^{-t}\right) هو [1,1][-1, 1]. - مدى g(t)=1+3t g(t)=\sqrt{1+3^{-t}} هو [1,)[1, \infty). - مدى f(x)=31e2x f(x)=\frac{3}{1-e^{2 x}} هو جميع الأعداد الحقيقية باستثناء الصفر.

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