The butterfly needle differs from the straight ordinary needle in some points, as butterfly needle is shorter having rubber wings on both sides to provide a good grip during handling and at the end it is connected to the collecting tubes.uidelines For Butterfly Needle Gauge Selection. When we want to draw blood and the regular straight needle is not ideal we use the butterfly needle for this job, the butterfly needle...
The Mean Value Theorem for Integrals states that there must be a point â¬ x in the interval [â¬ a, â¬ b] where the exact function value actually equals the average function value. That is, there is a solution to the equation f(x)= 1 b âa f(x) dx a b â«. We can find the point â¬ x several ways: (i) Find the average value â¬ c âby handâ and then solve f(x) = â¬
In practice, what the mean value theorem does is control a function in terms of its derivative. For instance, suppose that f has derivative equal to zero at each point. This means that its tangent line is horizontal at every point, so the function should also be horizontal.