Mat 101 Past Questions and Answers Page 3
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MAT 101
QUESTION NUMBER 24
Solve the equation square root(2a-1) – square root(a-1) =1
A. 1 or 5
B. 2 or 5
C. 1 or 2
D. 1 or 7
ANSWER: C
QUESTION NUMBER 25
A is a matric with the property that A^T = A, then matrix A IS called……. matrix
A. Null
B. Identity
C. Symmetric
D. Despondent
ANSWER: C
QUESTION NUMBER 26
If Alpha A and alpha B are the roots of the polynomial X^2 + X + 1 = , obtain the value of 1/alpha a + 1/alpha b
A. -1
B. 2
C. 1
D. 1/2
ANSWER: A
QUESTION NUMBER 27
Solve the surdic equation 7/square root 7-square root 3 = x – y square root3 for x and y
A. 1/7, -1/7
B. 1/7, -2/7
C. 4/7, -2/7
D. 7/4, -7/4
ANSWER: D
QUESTION NUMBER 28
Express Z=-3i in a polar form
A. 3cos270 +3isin270
B. 31cos90 + 31isin90
C. 7cos270 – 7isin270
D. 13cos20 + 13isin20
ANSWER: C
QUESTION NUMBER 29
If Z = x + iy, find the equation of the locus|Z-1| = 5
A. (x-1)^2 + y^2= 25
B. (x-1)^2 – y y^2 = 25
C. (x+1)^2 + y^2 =25
D. (x+1)^2 – y^2 =25
ANSWER: A
QUESTION NUMBER 30
In how many ways can you arrange the letters of the word STUDENTSDASH
A. 19/2
B. 59875200
C. 19
D. 12
ANSWER: B
QUESTION NUMBER 31
Find the constant term in the expresion of (x + 1/x)^2
A. 9
B. 3
C. 24
D. 2!
ANSWER: D
