1. tan-1(4)
2. tan-1 (1/4)
3. (π/2)+tan-1(4)
4. (π/2)+ tan-1 (1/4)
tan-1(4)
1. sin-1(√(1/3)
2. tan-1√2
3. tan-1(1/√2)
4. cos-1(1/3)
tan-1√2
1. 0
2. u
3.
4.
1. ax2+x(4a-b)+4a+c=0
2. ax2+x(4a-b)+4a+2b+c=0
3. ax2+x(b-4a)+4a+2b+c=0
4. ax2+x(b-4a)+4a-2b+c=0
ax2+x(b-4a)+4a-2b+c=0
1. 0
2. ac
3. a+c
4. a-c
ac
1. 5
2. 4
3. 3
4. 6
5
1. x4-6x3+8x2+2x-1=0
2. x4-9x3+27x2-33x+14=0
3. x4-10x3+44x2-106x+91=0
4. x4-6x3+4x2+54x-117=0
x4-10x3+44x2-106x+91=0
1. Null matrix
2. Non-singular matrix
3. singular matrix
4. Unit matrix
singular matrix
1. -b3
2. b3-3c
3. b2-3c
4. 0
0
1. -1
2. 1 or 2
3. 1
4. 2
-1