Quiz about Formule - bacalaureat matematică - tehnologic

Question 1

$$\left(a-b\right)^2=..........................$$

Accepted Answer

$$a^2-2ab+b^2$$

Answer

$$a^2-b^2$$

Question 2

$$5^0=....$$

Accepted Answer

1

Answer

0

Answer

5

Question 3

$$5^{-1}=.......$$

Accepted Answer

$$\frac{1}{5}$$

Answer

$$-5$$

Question 4

$$\ln e=......$$

Accepted Answer

1

Answer

e

Answer

0

Question 5

$$\ln1=...$$

Accepted Answer

0

Answer

1

Answer

e

Question 6

Suma progresiei aritmetice este:

Accepted Answer

$$S_n=\frac{\left(a_1+a_n\right)\cdot n}{2}$$

Answer

$$S_n=\frac{\left(a_1+a_n\right)\cdot r}{2}$$

Question 7

$$\sin0=.....$$

Accepted Answer

0

Answer

1

Question 8

$$\cos0=.....$$

Accepted Answer

1

Answer

0

Question 9

Mijlocul M al unui segment [AB] are coordonatele:

Accepted Answer

$$M\left(\frac{x_A+x_B}{2},\frac{y_A+y_B}{2}\right)$$

Answer

$$M\left(\frac{x_A-x_B}{2},\frac{y_A-y_B}{2}\right)$$

Question 10

Aria unui triunghi oarecare este:

Accepted Answer

$$A=\frac{l_1\cdot l_2\cdot\sin\left(l_1,l_2\right)}{2}$$

Answer

$$A=\frac{c_1\cdot c_2}{2}$$

Question 11

Teorema sinusurilor este:

Accepted Answer

$$\frac{AB}{\sin C}=\frac{AC}{\sin B}=\frac{BC}{\sin A}=2R$$

Answer

$$\sin A=\sin B=\sin C$$

Question 12

Rezultatul limitei $$\lim_{x\rightarrow\infty}\ \frac{1}{2x+1}$$ este:

Accepted Answer

$$0$$

Answer

$$\infty$$

Question 13

$$\sqrt[]{9+16}=$$

Accepted Answer

$$=\sqrt[]{25}=5$$

Answer

$$=3+4=7$$

Question 14

$$\left(x\cdot e^x\right)$$

Accepted Answer

$$x$$

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