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| rev | Admin | (Created page with "Ernie makes deposits of 100 at time 0, and X at time 3. The fund grows at a force of interest <math display = "block"> \delta_{t}={\frac{t^{2}}{100}},\,t>0. </math> The amount of interest earned from time 3 to time 6 is also X Calculate X. <ul class="mw-excansopts"><li>385</li><li>485</li><li>585</li><li>685</li><li>785</li></ul> {{soacopyright | 2023 }}") | Nov 17'23 at 22:07 | +361 |