Given a tangent plane with equation at point Q= (a, b) z = f(a, b)
show this plane is parallel to the normal vector
t = <0,0,1>
at point Q.
Provide written explanation.

If you are dealt 4 cards from a shuffled deck of 52? cards, find the probability that all 4 cards are diamondsdiamonds.

Many newspapers carry a certain puzzle in which the reader must unscramble letters to form words. how many ways can the letters of emdangl be arranged? identify the correct unscrambling, then determine the probability of getting that result by randomly selecting one arrangement of the given letters.

Which of the following shows the graph of y=2e^x?