• A. AB Not = BA
• B. AB = BA
• C. AB =-BA
• D. BA=B

Answer: Option A

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. $\frac{1}{2}\frac{7x^2}{2\log e7}+c$
• B. $\frac{1}{2}\frac{7x^2}{2\log e7}+c$
• C. $\frac{7x^2}{\log 7^c}+c$
• D. Try your self

Answer: Option D

Explanation:

• A. $f"\left(2\right)<0$
• B. $f"\left(2\right)>0$
• C. $f"\left(2\right)=0$
• D. $f\text{'}\left(2\right)=0$

Answer: Option B

Explanation:

• A. $u$
• B. $2u$
• C. $4u$
• D. $3u$

Answer: Option D

Explanation:

• A. $8:3$
• B. $5:6$
• C. $3:8$
• D. $6:4$

Answer: Option A

Explanation:

• A. ০
• B. ১
• C. ২
• D. ৪

Answer: Option B

Explanation:

• A. $0$
• B. $1$
• C. $\frac{1}{2}$
• D. $2$

Answer: Option B

Explanation:

• A. $a$
• B. $a$
• C. $a+b$
• D. $\frac{1}{2}\left(a+b\right)$

Answer: Option D

Explanation:

• A. x=2, y =-2 z=1
• B. x =2 , y =2 z=1
• C. x=1 , y =4 , z=4
• D. x =1 , y=2 , z=0

Answer: Option B

Explanation:

• A. (১,০,০) (০,১,০)(০,০,১)
• B. (১,২,৩) (০,১,২) (১, ০,০)
• C. (১, ২,৩) (১,০,০) (০,১,০)(০,০,১)
• D. (২,৩,৫)(৪,৩,৫)(০,১,০)

Answer: Option A

Explanation:

• A. $0$
• B. $2$
• C. $6$
• D. $4$

Answer: Option C

Explanation:

• A. $\frac{6}{7}$
• B. $\frac{7}{6}$
• C. $\frac{7}{4}$
• D. $\frac{7}{7}$

Answer: Option A

Explanation:

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

Answer: Option A

Explanation:

• A. ৯৭, ৯৮
• B. ৯৬, ৯৭
• C. ৯৮, ৯৯
• D. ৯৯, ১০০

Answer: Option C

Explanation: