Kerala PSC Previous Years Question Paper & Answer
Page:10
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'HSST JUR MATHEMATICS NCA HIGHER SECONDARY EDUCATION' And exam conducted in the year 2015. And Question paper code was '315/2015'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
Question84:-If a, b, ¢ are the roots of the equation *x~(3}+px™ (2}+qx+r=0", then *1/a+1/b+1/c="
(லற
8:-(/0*
வற
0:09
Correct Answer:- Option-A
ட டு >~ ॐ 2
Question85:-The vector projection of B = L+ یل onto A= 57-௧8 is
4 ஆ =
५.# + ८५ - 2
۲ھ
हर न कर
, ങ് 3k)
2 2
L (5/-3k)
ام 7
Correct Answer:- Option-D
Question86:-" (d)/{dx)sinh~(-1)}{x}="
ക വ്ര)”
5:-“)0(/)59۲)1-+×)2(((”
யு)!
ப ஙு!
Correct Answer:- Option-B
Question87:-Equation எ the tangent at the point *(x_(1),y_(1))" on the parabola "y~ (2}=4ax’ ىا
கறு (௪260)
(1)=4 0८८ (1))`
ய) யி!
ے -0ا 28×
Correct Answer:- Option-A
Question88:-Rank of the matrix *[[3, 4, 1], [-2, 3, 2] [5, 1, -111' 15
ಹಿಂ
B:-1
6-2
0-3
Correct Answer:- Option-C
Question89:-"lim_{{x.y}->(0,0)" *{(5x™ Wy} (2x )4( + +)2 در(
Correct Answer:- Option-D
Question90:-Let *f(x)=x"(3)-12x+9". Then f(x} has a local maximum at
Correct Answer:- Option-D
0५650091: € ` ४#= (^ (2}+४^{2}` , x = r- Sand y = r + S. Then the partial derivative of W with respectto Sis
A:-*(deW)i(delS)=1"
D:- (delw)/{delS):
Correct Answer:- Option-C
Question92:-Solution of the differential equation *{d~ (2)y){dx~(2))-6dy/dx+13y=0" உ
‰:- ` €^ {34188 (20)