Page 253 - Math Grade 11 (Basic)

PROEUS DARA

10. fi. p = 1 ' q = -2 2. a = 3, b = 7 j:]. a= 2,b = 2

4. IH9lfiti X = 37.5 ~t9lti y = 12.5 5. X = JO, y = -20, Z = 30
)l.j u

4
b. X = 4, y = 3, Z = 2 y = 6 :3. X =- 3 , y = 8

'ijj X = 46 16 21
. 13 y = T3 ' z = 13
-2 I 3j
\:\. X = 215 275 475 ti. 'i'i5rlSFnStib~!15 ttmg [ 1 -7 -3 = o
66 'y=-66 , z=-66
t_;
GV
o1 '-"ff
4 -2-6

3.fi. [~ ~]
2. X = -8 , y = -J , Z = 0
4. fi. p = 1 , q = -2 2. a= 3 b = 7 j:]. a = -17b , b = -28
25 22
6. fi. X = - , y = 2. X = 2 , y = -J !:i. X = 4 , )' = 3 , z = 2 lli. X = 3 ' y = 8 ' z = I
29 29

2
3
12. fi. g'(x) = 12x -4x g"(x) = 36x - 4
" g'(x) :
2. ft.HTTltS
~
g'(x) < 0 Otmg x E ( -oo, f) u (o, f)
J3
J3
g'(x) = 0 or;mg X=-- X= 3 , X= 0
3 '
g'(x)>O Otmg xE(-f,o)u(f, +oo)

" g"(x) :
liHTTl CS
~
g"(x)>o or;mg xE(-oo, -~)uG, +oo)
0 1
g"(x) = o mmg x = ±
3
g"(x)<O or;mg xE(-~, ~)

' 3 ?
9. 1_YH'i5'i:fl8'i:fl2 V = 4x(x- 2a( '1
2
'iUHU'i:flS'i:fl~titir.H'i mrunm x = a '1
l_j I 3
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