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Riya Verma
Subject: Maths
, asked on 30/1/18
Plz solve qno.12
Answer
1
Vibhav
Subject: Maths
, asked on 29/1/18
Please answer this
Q. The height of a ball at time ' t ' is given by
$s\left(t\right)=96t-16{t}^{2}$
. Find the open interval on which the ball is moving up and moving down.
Answer
1
Dhinesh Vijayan
Subject: Maths
, asked on 29/1/18
Pls solve
Q.3. Find the equations of the tangent and the normal to the curve
${x}^{2}+{y}^{2}=5$
, where the tangent is parallel to the line 2x - y + 1 = 0
Answer
2
Akansha Karvekar
Subject: Maths
, asked on 26/1/18
Solve this:
y
= sin
^{2}
3 . tan
^{3}
2
x
.
Answer
1
Alifa
Subject: Maths
, asked on 21/1/18
the sum of perimeters of an equilateral triangle and a circle is 'k'(constant). Prove that their combined area is minimum when the side of the triangle is 2root3 times the radius of the circle.
Answer
2
Shobhil Shrivastava
Subject: Maths
, asked on 18/1/18
Please explain the highlighted step.
Answer
2
Varnika Dhiman
Subject: Maths
, asked on 17/1/18
Here, we got
x = 0
by shifting all the terms except
x
, and got
x = 2
by shifting all terms except
(2-x)
.
Fine till here.
I want to ask what value we will get if we shift
x
and
(2-x)
both to the RHS, i.e., how we'll solve
${e}^{-2x}=0$
to get value of x ?!
Kindly solve.
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 14/1/18
No links please
SECOND ORDER DERIVATIVE
Q.24. Eliminate a and b:
(i).
$y=a\mathrm{log}x+b$
Ans :
$x{y}_{2}+{y}_{1}=0$
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 14/1/18
No links please
Q.23. If
$p{v}^{\gamma}=c$
[
$\gamma $
and c are constants], show that,
${v}^{2}\frac{{d}^{2}p}{d{v}^{2}}=\gamma \left(\gamma +1\right)p$
Answer
1
Shubhrajyoti Ghosh
Subject: Maths
, asked on 14/1/18
$If{x}^{2}+{y}^{2}=25,find\frac{{d}^{2}y}{d{x}^{2}}atx=0$
Answer
1
Chaitanya Kapoor
Subject: Maths
, asked on 13/1/18
Please Solve:
Example:
Find the intervals in which
$f\left(x\right)=\mathrm{sin}3x-\mathrm{cos}3x,0x\mathrm{\pi}$
is strictly increasing or decreasing.
Answer
1
Chaitanya Kapoor
Subject: Maths
, asked on 13/1/18
Q Find the points on the curve
$9{y}^{2}={x}^{3}$
where normal tothe curve makes equal intercepts with the axes.
Answer
1
Laieeqa
Subject: Maths
, asked on 12/1/18
A man 1.6m tall walks at the rate of 0.5m/s away from a lamp post 8metres high .find the rate at which his Shadow is increasing and the rate with which the tip of shadow is moving away from the Pole
Answer
1
Laieeqa
Subject: Maths
, asked on 12/1/18
solve
12) A man 1.6m tall walks at the rate of 0.5m/sec away from the lamp post 8m hig. Find the rate at which his shadow is increasing and the rate with which the tip of shadow is moving away from the pole.
Answer
1
Laieeqa
Subject: Maths
, asked on 12/1/18
solve
11) Liquid is running out of a conical funnel at the rate of 5 cm
^{3}
/sec. If the radius of base of funnel is 10cm and the altitude is 20cm. Find the rate at which water level is dropping when it is 10cm from the top.
Answer
1
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What are you looking for?

Q. The height of a ball at time ' t ' is given by $s\left(t\right)=96t-16{t}^{2}$. Find the open interval on which the ball is moving up and moving down.

Q.3. Find the equations of the tangent and the normal to the curve ${x}^{2}+{y}^{2}=5$, where the tangent is parallel to the line 2x - y + 1 = 0

y= sin^{2}3 . tan^{3}2x.Please explain the highlighted step.

x = 0by shifting all the terms exceptx, and gotx = 2by shifting all terms except(2-x).Fine till here.

I want to ask what value we will get if we shift

xand(2-x)both to the RHS, i.e., how we'll solve ${e}^{-2x}=0$ to get value of x ?!Kindly solve.

SECOND ORDER DERIVATIVE

Q.24. Eliminate a and b:

(i). $y=a\mathrm{log}x+b$

Ans : $x{y}_{2}+{y}_{1}=0$

Q.23. If $p{v}^{\gamma}=c$ [$\gamma $ and c are constants], show that,

${v}^{2}\frac{{d}^{2}p}{d{v}^{2}}=\gamma \left(\gamma +1\right)p$

Example:Find the intervals in which $f\left(x\right)=\mathrm{sin}3x-\mathrm{cos}3x,0x\mathrm{\pi}$ is strictly increasing or decreasing.12) A man 1.6m tall walks at the rate of 0.5m/sec away from the lamp post 8m hig. Find the rate at which his shadow is increasing and the rate with which the tip of shadow is moving away from the pole.

11) Liquid is running out of a conical funnel at the rate of 5 cm

^{3}/sec. If the radius of base of funnel is 10cm and the altitude is 20cm. Find the rate at which water level is dropping when it is 10cm from the top.