1003085501 | math4u.vsb.cz

SubArea:

Limits and continuity

Level:

Project ID:

1003085501

Accepted:

1

Clonable:

0

Easy:

1

Decide which of the following functions are continuous at

x = 1

.

\begin{aligned} f_{1} (x) & = \frac{x^{2} + 1}{x - 1} \\ f_{2} (x) & = \sqrt{x - 1} \\ f_{3} (x) & = \log x \\ f_{4} (x) & = tg (x - 1) \end{aligned}

The only such functions are:

f_{3}

,

f_{4}

f_{2}

,

f_{3}

,

f_{4}

f_{2}

,

f_{3}

f_{3}