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ELEN [110]
3 years ago
8

The record high in January temperature in Austin,Texas,is 90 degreasEr. The record low January temperature is-2 degressF. Find t

he difference between the high and low temperatures
Mathematics
1 answer:
marysya [2.9K]3 years ago
7 0
Difference just means you subtract the two numbers, so:

90 - (-2) = x

( now you would "Copy Change Opposite") so;

90 + 2 = 92 *F


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Consider the following function. f(x) = 7x + 1 x (a) Find the critical numbers of f. (Enter your answers as a comma-separated li
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a) DNE

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c) DNE

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Given a function f(x), the critical points are those in which f^{\prime}(x) = 0, that is, the roots of the first derivative of f(x).

Those critical points let us find the intervals in which the function increases or decreases. If the first derivative in the interval is positive, the function increases in the interval. If it is negative, the function decreases.

If the function increases before a critical point and then, as it passes the critical point, it starts to decrease, we have that the critical point (x_{c}, f(x_{c}) is a relative maximum.If the function decreases before a critical point and then, as it passes the critical point, it starts to increase, we have that the critical point [tex](x_{c}, f(x_{c}) is a relative minimum.If the function has no critical points, it either always increases or always decreases.In this exercise, we have that:[tex]f(x) = 7x + 1

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f^{\prime}(x) = 0

f^{/prime}(x) = 7

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f(x) = ax + b

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