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a) Determine all x-values where the function has a horizontal tangent line. y=ln(1+sinx) b) The position...

a) Determine all x-values where the function has a horizontal tangent line. y=ln(1+sinx)

b) The position of a particle is given by s(t)+2e^t/t . What is the particle's acceleration at t=1?  Round to 2 decimal places.

c)Determine the limit using L'Hospital's rule. Before applying the rule, first verify that the function is a simplified indeterminate form. The rule may need to be used more than once. lim x->0 x^2/1-cosx

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