Lösung 1.1:1a
Aus Online Mathematik Brückenkurs 2
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K (Lösning 1.1:1a moved to Solution 1.1:1a: Robot: moved page) |
Version vom 14:18, 16. Sep. 2008
The derivative f'(-4)gives the function's instantaneous rate of change at the point x=-4, i.e. it is a measure of the function's value changes in the vicinity of x=-4.
In the graph of the function, this derivative is equal to the slope of the tangent to the curve of function at the point x=-4.
Because the tangent is sloping upwards, it has a positive gradient and therefore f'(-4)>0.
At the point x=1, the tangent slopes downwards and this means that f'(1)<0.
