• A. $80°$
• B. $120°$
• C. $160°$
• D. $180°$

Answer: Option D

Explanation:

• A. -x + c
• B. x + c
• C. $\frac{1}{x}+c$
• D. $-\frac{1}{x}+c$

Answer: Option C

Explanation:

• A. - x + c
• B. x + c
• C. $\frac{1}{x}+c$
• D. $-\frac{1}{x}+c$

Answer: Option C

Explanation:

• A. $e^x\sin x+c$
• B. $-e^x\sin x+c$
• C. $e^x\cos x+c$
• D. $-e^x\cos x+c$

Answer: Option A

Explanation:

• A. ${\tan }^{-1}\left(e^{2x}\right)+c$
• B. $\frac{1}{2}{\tan }^{-1}\left(e^{2x}\right)+c$
• C. $\frac{1}{2}{\tan }^{-1}\left(e^{-2x}\right)+c$
• D. কোনটিই নয়

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $\frac{1}{2}{\tan }^{-1}\left(\frac{\tan x}{2}\right)+c$
• B. $\frac{1}{3}{\tan }^{-1}\left(\frac{\tan x}{2}\right)+c$
• C. $2{\tan }^{-1}\left(\frac{\tan x}{2}\right)+c$
• D. ${\tan }^{-1}\left(ex\right)+c$

Answer: Option A

Explanation:

• A. $\frac{1}{2}$
• B. $\frac{1}{3}$
• C. $\frac{1}{4}$
• D. $1$

Answer: Option C

Explanation:

• A. 4
• B. 2
• C. 6
• D. in 6

Answer: Option D

Explanation:

• A. $2+\sqrt{2}$
• B. $3-\sqrt{2}$
• C. $3+\sqrt{2}$
• D. $2-\sqrt{2}$

Answer: Option D

Explanation:

• A. $\frac{\mathrm{\pi }}{2}$
• B. $\frac{\mathrm{\pi }}{8}$
• C. $\frac{\mathrm{\pi }}{6}$
• D. $\frac{\mathrm{\pi }}{4}$

Answer: Option B

Explanation:

• A. $৬৫°$
• B. $৭৫°$
• C. $৮৫°$
• D. $৯০°$

Answer: Option A

Explanation:

• A. $36°$
• B. $18°$
• C. $54°$
• D. $45°$

Answer: Option C

Explanation:

• A. একটি স্বাভাবিক সংখ্যা
• B. একটি পূর্ণ সংখ্যা
• C. একটি মূলদ সংখ্যা
• D. একটি অমূলদ সংখ্যা

Answer: Option D

Explanation:

• A. $45°$
• B. $22.5°$
• C. $30°$
• D. $60°$

Answer: Option C

Explanation: