- As x goes to -1, (x^2+2x-1)/(x-1) = 1 Prove the limit exists using the epsilon-delta definition.?

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Help with this please? If f(x)=7arctan(2sin(3x)), find f'(x)? Describe the systems that are used to eliminate solid and liquid wastes.? A farm tractor tows a 3700-kg trailer up a 20 ∘ incline with a steady speed of 3.0 m/s.? Calculate the mass (in grams) of 2.850 moles of CaCl2.2H2O (molar mass = 147.1 g/mol).? What subject is harder “Visual Communication Design or Geography?”?