true or false questions. please explain why.  . 1-if lim_{x->a} f(x)=∞ and y=g(x) is defined and bounded below on an interval containing a , then lim_{x->a} f(x)+g(x)=∞ 2- if 0≤a≤1/e , then the equation x.e^-x=a has a nonnegative solution. 3-suppose that a function y=f(x) is continuous on I=[a,b] and if the set  f(I)=[f(a),f(b)], then y=f(x) is strictly increasing.

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true or false questions. please explain why.  .

1-if lim_{x->a} f(x)=∞ and y=g(x) is defined and bounded below on an interval containing a , then lim_{x->a} f(x)+g(x)=∞

2- if 0≤a≤1/e , then the equation x.e^-x=a has a nonnegative solution.

3-suppose that a function y=f(x) is continuous on I=[a,b] and if the set  f(I)=[f(a),f(b)], then y=f(x) is strictly increasing.

 
 
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