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Drishti
Subject: Maths
, asked on 21/5/18
find tan inverse 0.999 by differentials method. please answer today only.
Answer
1
Vani Singh
Subject: Maths
, asked on 17/5/18
Find a for which function (a+2)x^3-3ax^2+9ax-1 decreases for all real values of x
Answer
1
Manasi Mujumdar
Subject: Maths
, asked on 16/5/18
Let fx=tan inverse gx gx is monitonicaly increasing for 0 to pi/2 then what is the interval for which fx is increasing?
Answer
1
Ankit Dhumale
Subject: Maths
, asked on 8/5/18
plz explain it to me how it is done
Answer
1
Suroj Dey
Subject: Maths
, asked on 7/5/18
Q. Solution to comprehension #9
Answer
0
Shri Ganesh
Subject: Maths
, asked on 20/4/18
(a.i)(ax i)+(a.j)(ax j) +(a.k)(ax k) is equal to
Answer
1
Athul Vincent
Subject: Maths
, asked on 20/4/18
Q.1. Prove that that the length of the chord joining the points of contact of tangents drawn from the point
x
1
,
y
1
i
s
y
1
2
+
4
a
2
y
1
2
-
4
a
x
1
a
Answer
1
Deepak Vyas
Subject: Maths
, asked on 18/4/18
Q56.solution pls.
Q.56. A balloon is pumped at the rate of 4
c
m
3
per second. What is the rate at which its surface area increases when its radius is 4 cm ?
(A) 1
c
m
2
/sec
(B) 2
c
m
2
/sec
(C) 3
c
m
2
/sec
(D) 4
c
m
2
/sec
Answer
1
Pankaj Mandrawal
Subject: Maths
, asked on 27/3/18
Q). If the vertex of the parabola
y
=
-
x
-
a
2
+
b
lies on the parabola
y
=
x
3
and one of the x-intercepts of the parabola is 8, then what is the value of a if a > 0?
a) 1
b) 2
c) 4
d) 8
Answer
1
Suroj Dey
Subject: Maths
, asked on 26/3/18
Q. f(x) = -1+kx+k neither touches nor intersects f(x) = log x, then the
m
i
n
m
value of k
∈
is
a
.
1
e
,
1
e
b
.
e
,
e
2
c
.
1
e
,
e
d
.
n
o
n
e
o
f
t
h
e
s
e
Answer
1
Sandra Saju
Subject: Maths
, asked on 23/3/18
Please provide answer for question no. 6 without providing any links and provide proper steps.
Q.6. Obtain all other zeroes of the polynomial
4
x
4
+
x
3
-
72
x
2
-
18
x
, if two of its zeroes are
3
2
a
n
d
-
3
2
.
Answer
2
Sandra Saju
Subject: Maths
, asked on 23/3/18
Please help this question no. 5 without providing links and show the proper steps.
Q.5. What must be subtracted from the polynomial
x
4
-
4
x
3
-
39
x
2
-
46
x
-
2
so that the resulting polynomial is exactly divisible by
x
2
-
5
x
+
6
.
Answer
1
Shanaya
Subject: Maths
, asked on 20/3/18
Q. Find the maximum and the minimum values
h(x) = x+1, x
∈
(-1,1)
Answer
3
N I S H I D H A .
Subject: Maths
, asked on 20/3/18
How to find such things? Like, it is negative or positive and all? :/ This pic is just a sample.. am unable to understand how we get (-)(-)(-) or (-)(+)(-) or (+)(+)(-) or (+)(+)(+) and all? :/ (P.S : Don't ask me to check study material coz am NEET member, so am unable to get access to maths)
Interval
Sign of f'(x)=12x(x+1)(x-2)
Nature of function
-
∞
,
-
1
(-)(-)(-)=(-) or <0
Strictly decreasing
(-1,0)
(-)(+)(-)=(+) or >0
Strictly increasing
(0,2)
(+)(+)(-)=(-) or <0
Strictly decreasing
(2,
∞
)
(-)(+)(+)=(+) or >0
Strictly increasing
(a) The given function is strictly increasing in the intervals
-
1
,
0
∪
2
,
∞
(b) The given function is strictly decreasing in the intervals
-
∞
,
-
1
∪
0
,
2
Answer
1
Kurian J
Subject: Maths
, asked on 20/3/18
Plz fast....
Explain me this differentiation ?? fAST..:
Q.
∴
v
=
1
3
πr
2
h
⇒
v
=
1
3
πr
2
12
+
144
-
r
2
On
differentiating
with
respect
to
r
,
we
have
.
dv
dr
=
1
3
π
2
r
12
+
144
-
r
2
+
1
3
π
r
2
-
2
r
2
144
-
r
2
=
2
3
π
12
r
+
r
144
-
r
2
-
1
3
π
-
r
3
144
-
r
2
Answer
1
1
2
3
4
5
Next
What are you looking for?
Q.56. A balloon is pumped at the rate of 4 per second. What is the rate at which its surface area increases when its radius is 4 cm ?
(A) 1 /sec
(B) 2 /sec
(C) 3 /sec
(D) 4 /sec
a) 1
b) 2
c) 4
d) 8
Q. f(x) = -1+kx+k neither touches nor intersects f(x) = log x, then the value of kis
Q.6. Obtain all other zeroes of the polynomial , if two of its zeroes are .
Q.5. What must be subtracted from the polynomial so that the resulting polynomial is exactly divisible by .
h(x) = x+1, x (-1,1)
(-)(+)(+)=(+) or >0
(a) The given function is strictly increasing in the intervals
(b) The given function is strictly decreasing in the intervals
Explain me this differentiation ?? fAST..:
Q.