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Erw Trjerth
Subject: Maths
, asked on 14/3/18
Prove that
f
(
x
)
=
sin
x
x
2
+
cos
x
,
x
>
0
4
(
1
-
1
-
x
)
x
x
=
0
,
x
<
0
i
s
c
o
n
t
i
n
o
u
s
a
t
x
=
0
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
2
)
I
f
y
=
tan
x
+
tan
x
+
tan
x
+
.
.
.
∞
,
P
+
(
2
y
-
1
)
d
y
d
x
=
s
e
c
2
x
.
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
↵
Solve
this:
16. If
y
d
x
+
x
log
y
x
d
y
-
2
x
d
y
=
0
P
r
o
v
e
x
3
+
x
2
+
x
+
1
d
y
d
x
=
2
x
2
+
x
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
Solve this:
Q22.
f
x
=
x
+
3
,
x
≤
-
3
-
2
x
,
-
3
<
x
<
3
6
x
+
2
,
x
≥
3
, then find points of discontinuity
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
f
x
=
3
a
x
+
b
,
x
>
1
11
,
x
=
1
5
a
x
-
2
b
,
x
<
1
i
s
c
o
n
t
i
n
u
o
u
s
a
t
x
=
1
,
f
i
n
d
a
a
n
d
b
.
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
Solve
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
Differentiate wrt x
Answer
1
Erw Trjerth
Subject: Maths
, asked on 14/3/18
Find the derivative of the following:
1
.
e
x
log
a
+
e
a
log
x
+
e
a
log
a
2
.
log
3
x
+
3
log
e
x
+
2
tan
x
Answer
1
B Ashwini
Subject: Maths
, asked on 14/3/18
how PROVE dIFFERENTIABILTY OF A FUNCTION AT A POINT??
Answer
1
Abhay
Subject: Maths
, asked on 13/3/18
Solve 10 and 12:
10
.
f
(
x
)
=
x
+
1
,
i
f
x
≥
1
x
2
+
1
,
i
f
x
<
1
12
.
f
(
x
)
=
x
10
-
1
,
i
f
x
≤
1
x
2
,
i
f
x
>
1
Answer
1
Abhay
Subject: Maths
, asked on 13/3/18
fx=x-5 continuous at x=5 and x=6
Answer
1
Hisham Moizuddin
Subject: Maths
, asked on 12/3/18
x
1
+
y
+
y
1
+
x
=
0
,
P
.
T
,
d
y
d
x
=
-
1
1
+
x
2
Answer
1
Yashashri Thakur
Subject: Maths
, asked on 9/3/18
Q6) ii
Answer
2
Hisham Moizuddin
Subject: Maths
, asked on 7/3/18
Q
.
F
o
r
w
h
a
t
v
a
l
u
e
o
f
λ
,
i
s
t
h
e
f
u
n
c
t
i
o
n
d
e
f
i
n
e
d
b
y
f
x
=
λ
x
2
-
2
x
:
x
≤
0
4
x
+
1
:
x
>
0
W
h
a
t
a
b
o
u
t
c
o
n
t
i
n
u
i
t
y
a
t
x
=
1
.
Answer
1
Vibhav
Subject: Maths
, asked on 1/3/18
Let a Then limit n -> infinity (a)^(n) is 0
Let b > 1
Then limit n -> infinity (b)^(n) is infinity
Am I right????
Answer
1
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What are you looking for?
16. If
Q22. , then find points of discontinuity
Let b > 1
Then limit n -> infinity (b)^(n) is infinity
Am I right????