English
Tamil Nadu Board of Secondary EducationHSC Science Class 12

Find the differential dy for the following functions: y = (3+sin(2x))23 - Mathematics

Advertisements
Advertisements

Question

Find the differential dy for the following functions:

y = `(3 + sin(2x))^(2/3)`

Sum

Solution

dy = `{2/3[3 + sin(2x)]%^((-1)/3) [(cos2x)(2)]} "d"x`

= `{4/3(3 + sin 2x)^((-1)/3) (cos 2x)} "d"x`

= `{4/3 (3 + sin 2x)^((-1)/3) (cos 2x)}  "d"x`

= `{4/3 (cos2x)/(3 + sin2x)^(1/3)} "d"x`

shaalaa.com
Linear Approximation and Differentials
  Is there an error in this question or solution?
Chapter 8: Differentials and Partial Derivatives - Exercise 8.2 [Page 67]

APPEARS IN

Samacheer Kalvi Mathematics - Volume 1 and 2 [English] Class 12 TN Board
Chapter 8 Differentials and Partial Derivatives
Exercise 8.2 | Q 1. (ii) | Page 67

RELATED QUESTIONS

Use the linear approximation to find approximate values of `root(4)(15)`


Use the linear approximation to find approximate values of `root(3)(26)`


Find a linear approximation for the following functions at the indicated points.

f(x) = x3 – 5x + 12, x0 = 2


Find a linear approximation for the following functions at the indicated points.

g(x) = `sqrt(x^2 + 9)`,  x0 = – 4


Find a linear approximation for the following functions at the indicated points.

h(x) = `x/(x + 1), x_0` = 1


The radius of a circular plate is measured as 12.65 cm instead of the actual length 12.5 cm. find the following in calculating the area of the circular plate:

Relative error


The time T, taken for a complete oscillation of a single pendulum with length l, is given by the equation T = `2pi sqrt(l/g)` where g is a constant. Find the approximate percentage error in the calculated value of T corresponding to an error of 2 percent in the value of l


Show that the percentage error in the nth root of a number is approximately `1/"n"` times the percentage error in the number


Find the differential dy for the following functions:

y = `(1 - 2x)^3/(3 - 4x)`


Find the differential dy for the following functions:

y = `"e"^(x^2 - 5x + 7) cos(x^2 - 1)`


Find df for f(x) = x2 + 3x and evaluate it for x = 2 and dx = 0.1


Find Δf and df for the function f for the indicated values of x, Δx and compare:

f(x) = x2 + 2x + 3, x = – 0.5, Δx = dx = 0.1


The trunk of a tree has a diameter of 30 cm. During the following year, the circumference grew 6 cm. What is the percentage increase in the area of the cross-section of the tree?


An egg of a particular bird is very nearly spherical. If the radius to the inside of the shell is 5 mm and the radius to the outside of the shell is 5.3 mm, find the volume of the shell approximately


The relation between the number of words y a person learns in x hours is given by y = `sqrt(x), 0 ≤ x ≤ 9`. What is the approximate number of words learned when x changes from 1 to 1.1 hours?


The relation between the number of words y a person learns in x hours is given by y = `sqrt(x), 0 ≤ x ≤ 9`. What is the approximate number of words learned when x changes from 4 to 4.1 hours?


A circular plate expands uniformly under the influence of heat. If its radius increases from 10.5 cm to 10.75 cm, then find an approximate change in the area and the approximate percentage change in the area


Choose the correct alternative:

If we measure the side of a cube to be 4 cm with an error of 0.1 cm, then the error in our calculation of the volume is


Choose the correct alternative:

Linear approximation for g(x) = cos x at x = `pi/2` is


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×