- Please help my hw for physics?

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How to speed up dilation? Can somebody help me differentiate f(x)= (-x^2-1)/(x^2-1)^2 and get the answer as f''(x)= (2x^3 +6x)/(x^2-1)^3? What the amount of heat necessary to raise the temperature of 12.0 g of water from 15.4°C to 93.0°C. The specific heat of water = 4.18 J/g°C? The smallest of 11 consecutive integer is -4 times as large as the largest, what is the sum of these 11 integers.? Who know how to dellete an virus?