NCERT Solutions
Board Paper Solutions
Ask & Answer
School Talk
Login
GET APP
Login
Create Account
Popular
Latest
Apurva Inamdar
Subject: Maths
, asked on 17/4/18
Please answer 33rd question
Answer
1
Ashutosh Patra
Subject: Maths
, asked on 15/4/18
Q.):-
y
=
c
o
t
-
1
1
-
x
1
+
x
f
i
n
d
d
y
d
x
.
Answer
1
Shri Ganesh
Subject: Maths
, asked on 13/4/18
Q.104 If f(x) = x
n
, then the value of f(1) + f
1
(1)/1! +f
2
(1)/2! +...................f
n
(1)/n! Where f
r
(1) denotes the r
th
order derivative of f(x) with respect to x is (a) n (b) 2
n
(c) 2
n-1
(d) n 2
n-1
Answer
1
Shruthi Sreedhar
Subject: Maths
, asked on 12/4/18
if y root(1-x^2)+x root(1-y^2)=1, prove that dy/dx= --root(1-y^2/1-x^2). pls answer asap
Answer
1
Vidipta Fulpadia
Subject: Maths
, asked on 11/4/18
solve this
Q.
lim
x
→
∞
2
x
-
1
2
5
x
-
4
3
4
x
-
1
5
Answer
1
Yashashri Thakur
Subject: Maths
, asked on 4/4/18
Please don't send the link.
11
.
I
f
2
x
=
y
1
5
+
y
1
5
a
n
d
x
2
-
1
d
2
y
d
x
2
+
λ
x
d
y
d
x
+
k
y
=
0
,
t
h
e
n
λ
+
k
i
s
e
q
u
a
l
t
o
:
1
-
23
2
-
24
3
26
4
-
26
Answer
1
Sangeeta Jha
Subject: Maths
, asked on 3/4/18
Solve this:
Q.87. Let a, b, c
∈
R. If f (x) =
a
x
2
+
b
x
+
c
be such that a + b + c = 3 and f (x + y) = f (x) + f (y) + xy,
∀
x, y
∈
R, then
∑
n
=
1
10
f
(
n
)
is equal to
(a) 330
(b) 165
(c) 190
(d) 255
Answer
1
Riya Raheem
Subject: Maths
, asked on 1/4/18
y=x
x
.prove that d
2
y/dx
2
-1/y*(dy/dx)
2
-y/x=0
Answer
1
Rupal Sahu
Subject: Maths
, asked on 27/3/18
Solve this:
Q1. Let a = min [x
2
+ 2x + 3 , x
∈
R
] and b =
Lim
θ
→
0
1
-
cos
θ
θ
2
. The value of
∑
r
=
0
n
a
r
.
b
n
-
r
is
A
2
n
+
1
-
1
3
.
2
n
B
2
n
+
1
+
1
3
.
2
n
C
4
n
+
1
-
1
3
.
2
n
(D) none of these
Answer
1
Shri Ganesh
Subject: Maths
, asked on 25/3/18
Q.10
3
is (1) 1/8 (2) 0 (3) 1/32 (4) infinity
Answer
1
Deepak Vyas
Subject: Maths
, asked on 19/3/18
I
f
x
=
a
cos
3
θ
a
n
d
y
=
a
sin
3
θ
,
t
h
e
n
f
i
n
d
t
h
e
v
a
l
u
e
o
f
d
2
y
d
x
2
a
t
θ
=
π
6
.
Answer
3
Jeneeta Eliza John
Subject: Maths
, asked on 18/3/18
E
v
a
l
u
a
t
e
∫
sin
-
1
2
s
e
c
x
1
+
s
e
c
2
x
d
x
Answer
0
Jeneeta Eliza John
Subject: Maths
, asked on 18/3/18
Please solve both the parts
Q.23.Consider the functions defined as follows, for
x
≠
0
. In each case, what choice (if any) of f (0) will make the function continuous at x = 0?
(i)
f
x
=
1
+
x
3
-
1
x
(ii)
f
x
=
5
x
-
3
tan
x
+
sin
2
x
x
Answer
1
Jeneeta Eliza John
Subject: Maths
, asked on 18/3/18
Please solve
Example 31. Examine the function f (x) =
x
tan
-
1
1
x
,
x
≠
0
0
,
x
=
0
for continuity at x = 0.
Answer
1
Jeneeta Eliza John
Subject: Maths
, asked on 18/3/18
Please answer
30
.
E
x
a
m
i
n
e
t
h
e
f
u
n
c
t
i
o
n
f
(
x
)
=
x
-
a
sin
1
x
-
a
,
x
≠
a
0
,
x
=
a
f
o
r
c
o
n
t
i
n
u
i
t
y
a
t
x
=
a
.
Answer
1
Prev
1
2
3
4
5
Next
What are you looking for?
Q.
Q.87. Let a, b, c R. If f (x) = be such that a + b + c = 3 and f (x + y) = f (x) + f (y) + xy, x, y R, then is equal to
(a) 330
(b) 165
(c) 190
(d) 255
Q1. Let a = min [x2 + 2x + 3 , x ] and b = . The value of is
(D) none of these
Q.23.Consider the functions defined as follows, for . In each case, what choice (if any) of f (0) will make the function continuous at x = 0?
(i)
(ii)
Example 31. Examine the function f (x) = for continuity at x = 0.