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The cumulative probability function of the daily number of customers visiting a retail store during a specific time slot () is given in the table below.

The expected value and variance of the daily number of costumers visiting the store are, respectively,

3 and 19.6

❌

3 and 1

✅

6.5 and 19.6

❌

None of the options is correct

❌

6.5 and 1

❌

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Estudia la derivabilidad de f(x) = |x – 3|

Calcula la derivada de la siguiente función:

f ’(x) = 2^x si x > 1; f’(x) = 2x si x < 1

f ’(x) = 2^x si x < 1; f’(x) = 2x si x > 1

f ’(x) = 2^x ln 2 si x > 1; f’(x) = 2x si x < 1

f ’(x) = 2^x ln 2 si x < 1; f’(x) = 2x si x > 1

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Calcula la derivada de la función f(x) = |x| en el intervalo [0, 1]

En el intervalo [0, 1] → f(x) = – x → f`(x) = – 1

❌

En el intervalo [0, 1] → f(x) = x → f`(x) = 1

✅

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