1 . ∫x1-x2dx=?

• A. $\sqrt{1-x^2}+C$
• B. $-\sqrt{1-x^2}+C$
• C. $\frac{1}{\sqrt{1-x^2}}+C$
• D. $-\frac{1}{\sqrt{1-x^2}}+C$

Answer: Option B

Explanation:

2 . ∫x=x3-3x2+6x+2

• A. 1
• B. 5
• C. 10
• D. কোনটিই নয়

Answer: Option D

Explanation:

3 . ∫x

• A. $\infty ,\infty$
• B. $\mathrm{ℝ},\mathrm{ℝ}$
• C. $\mathrm{ℝ}\setminus \left\{4\right\},\mathrm{ℝ}$
• D. $\mathrm{ℝ}\setminus \left\{4\right\},\mathrm{ℝ}\left\{8\right\}$

Answer: Option D

Explanation:

4 . ∫x=x2a-x

• A. a
• B. 2a
• C. $2a^2$
• D. mn
• D. $a^2$

Answer: Option A

Explanation:

5 . ∫∫xdx=x+e2x+c

• A. $x+2e^x$
• B. $1+e^{2x}$
• C. $1+2e^{2x}$
• D. $x^2+2e^x$

Answer: Option A

Explanation:

6 . ∫xdx1-x2=?

• A. $-\sqrt{x}+C$
• B. $-\sqrt{1-x}+C$
• C. $\sqrt{1-x^2}+C$
• D. $-\sqrt{1-x^2}+C$

Answer: Option D

Explanation:

7 . ∫x=logx-x2-4

• A. $\left[-2,2\right]$
• B. $(-\infty -2]$
• C. $[4,\infty )$
• D. $[2,\infty )$

Answer: Option D

Explanation:

8 . ∫xex (1+x)2 dx= ?

• A. null
• B. x 1+x +c
• C. ex 1+x +c
• D.

Answer: Option A

Explanation: