(1) First Principle f(xth)-f(x) Use the definition of derivative as limit: f'(x) = lim h-0 h Find the slope of f(x) = v2x at x = 18Elasticity of Demand For the linear demand 3:) = 13 - 0.05:], please nd the price interval in which the demand is: a) Elastic b) Inelastic c) Unit elastic d) Explain intuitively the meaning of increasing revenue on interval for which demand is elastic and decreasing revenue an interval for which demand is inelastic (50 100 words) (20 points)