\"\" \ \

\

The annual investment worth after \"\" years is \"\".

\

(a) Find the first five terms of the sequence. \ \

\

\"\".

\

\"\".

\

\"\".

\

\"\".

\

\"\".

\

The first five terms of the sequence are \"\".

\

\"\"

\

(b) Find the sequence is convergent or divergent.

\

The sequence is \"\".

\

Ratio test: \ \

\

The sequence of the \"\" is convergent if \"\".

\

The sequence of the \"\" is divergent if \"\".

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Replace \"\" by \"\" in \"\".

\

\"\"

\

\"\".

\

Substitute \"\".

\

\"\"

\

\"\"

\

Hence the value of \"\".

\

Therefore, the sequence is divergent.

\

\"\"

\

(a) The first five terms of the sequence are \"\".

\

(b) The sequence is divergent.