1. The value of limx->0 (sqrt 4-x) +2 / -x expressed to the nearest hundredth must be _____.
2. If P(k,k^2) is a point of the function y=f(x), then the slope of the tangent at point P could be represented by ak. The value of a must be _____.
3. If f(x) = 4x^2 - 32x the value of x where the slope is 0 must be _____.

_ x+2,x1 3. For the function f(x) ={ 2 }, x,x>1 3. Use limits to show that x) is discontinuous at x = -1. b. Sketch the graph of x)