1. co to vat , netto i brutto? po co to ?
2.jakie są stawki vat i do czego on jest ?
3. jak oblicza się netto , brutto i vat ?

proszę o szybką odpwoedz potrzebne na teraz.

answer: do you still need this?

b) well because you get well

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.