• A. $\frac{y}{4}\tan x$
• B. $\frac{y}{2}\tan x$
• C. $\frac{y^2}{2}\tan x$
• D. $\frac{y}{2}{\tan }^{2}x$

Answer: Option B

Explanation:

• A. $\frac{d^{3}y}{d{x}^3}=0$
• B. $\frac{d^{2}y}{d{x}^2}+2a=0$
• C. $\frac{dy}{dx}+2ax-b=0$
• D. $\frac{d^{3}y}{d{x}^2}+\frac{d^{2}y}{d{x}^2}+\frac{dy}{dx}-2ay=0$

Answer: Option C

Explanation:

• A. একটি সমবাহু ত্রিভুজ
• B. একটি সমদ্বিবাহু ত্রিভুজ
• C. একটি বিষমবাহু ত্রিভুজ
• D. একটি সমকোণী ত্রিভুজ

Answer: Option B

Explanation:

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

Answer: Option A

Explanation:

• A. $\frac{n!}{x^{n+1}}$
• B. $\frac{{\left(-1\right)}^{n}n!}{x^{n+1}}$
• C. $\frac{{\left(-1\right)}^{n+1}n!}{\left(n+1\right)!}$
• D. $\frac{{\left(-1\right)}^{n+1}n!}{\left(n-1\right)!}$

Answer: Option B

Explanation:

• A. $3\sqrt{2}$
• B. $2\sqrt{3}$
• C. $10$
• D. $3\sqrt{5}$

Answer: Option C

Explanation:

• A. $\frac{56}{3}$
• B. $\frac{32}{3}$
• C. $\frac{-64}{3}$
• D. $\frac{64}{3}$

Answer: Option D

Explanation:

• A. $\frac{56}{3}$
• B. $\frac{32}{3}$
• C. $\frac{-64}{3}$
• D. $\frac{64}{3}$

Answer: Option D

Explanation:

• A. $3$
• B. $\frac{1}{3}$
• C. $6$
• D. $\frac{1}{6}$

Answer: Option B

Explanation:

• A. $0$
• B. $\sqrt{2}$
• C. $2\sqrt{5}$
• D. $6$

Answer: Option C

Explanation:

• A. $2$
• B. $3$
• C. $4$
• D. $\sqrt{5}$

Answer: Option C

Explanation:

• A. পরিপূরক
• B. বিকল্প
• C. গিফেন
• D. গণদ্রব্য

Answer: Option A

Explanation:

• A. (x + 2)
• B. (x - 2 )
• C. (x + 4 )
• D. x (x - 2 )

Answer: Option B

Explanation:

• A. $5 \surd 3$
• B. $4 \surd 3$
• C. $2 \surd 5$
• D. 52

Answer: Option D

Explanation:

• A. (8,4)
• B. ( 6,3)
• C. (2,1)
• D. (4,2)

Answer: Option D

Explanation: