When users search for an app on Google Play, they go through several steps: they make a query, and review the description, rating, and reviews. The texts of the long and short descriptions are the first interaction point between the user and the developer.
For users, these texts serve as a source of information about the product "from the creator". By reading the descriptions, the user forms an impression of whether this app is relevant to their needs or not. For developers, creating app descriptions is a starting point in preparing marketing materials.
Problem: Evaluate: $\tan^-1(1) + \tan^-1(2) + \tan^-1(3)$. Solution: Let $A = \tan^-1(1) + \tan^-1(2)$. Here $x=1, y=2$. Since $xy = 2 > 1$, use the extended formula. $$A = \pi + \tan^-1\left(\frac1+21-(1)(2)\right) = \pi + \tan^-1\left(\frac
You're looking for study materials for 12th mathematics chapter in English medium for the year 2021, specifically authored by S. Rajan, M.Sc., M.Phil., M.Ed. Here are some potential resources:
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Author: S. Rajan, M.Sc., M.Phil., M.Ed. (English Medium, 2021)
Here is a detailed look at the chapters covered, with highlights of what S. Rajan’s material offers for each. Problem: Evaluate: $\tan^-1(1) + \tan^-1(2) + \tan^-1(3)$
(Work solutions by applying chapter methods above.)
Given the academic disruption of 2020–21, S. Rajan added three special modules:
Problem: Solve the system of equations using matrix inversion method: $$2x - y = 7$$ $$x + 3y = -11$$
Solution: Step 1: Write in matrix form $AX = B$. $$\beginpmatrix 2 & -1 \ 1 & 3 \endpmatrix \beginpmatrix x \ y \endpmatrix = \beginpmatrix 7 \ -11 \endpmatrix$$ Specific Study Materials:
Step 2: Find $|A|$. $$|A| = 2(3) - (-1)(1) = 6 + 1 = 7 \neq 0.$$ Since $|A| \neq 0$, the inverse exists.
Step 3: Find Adj(A). Interchange diagonal elements and change the sign of non-diagonal elements. $$\textadj A = \beginpmatrix 3 & 1 \ -1 & 2 \endpmatrix$$
Step 4: Find $X = A^-1B$. $$X = \frac17 \beginpmatrix 3 & 1 \ -1 & 2 \endpmatrix \beginpmatrix 7 \ -11 \endpmatrix$$ $$X = \frac17 \beginpmatrix 21 - 11 \ -7 - 22 \endpmatrix = \frac17 \beginpmatrix 10 \ -29 \endpmatrix = \beginpmatrix 10/7 \ -29/7 \endpmatrix$$ Result: $x = \frac107, y = -\frac297$.
An effective way to promote a mobile application is to expand into foreign markets. In this case, there is a need to translate the application and metadata into foreign languages, which is called App Store Optimization (ASO) localization.
The absence of description in the native language can deter users from downloading the application, as they may not understand its purpose, even if the application itself has been translated.
Use templates for creating descriptions during product localization if you are developing an application in multiple languages.
Use the source language (in our example, English) as a reference and inspiration for creating descriptions in the translated language, but DO NOT rely on automated translation tools!
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For maximum useful information on the intricacies of mobile app promotion, check out Radomir Novkovich's Telegram channel RadASO.
Radomir Novkovich is the developer of a unique analytical tool for app ranking in top stories, and the founder of the mobile marketing agency RadASO. RadASO is the first company that takes on the risks associated with app store optimization (ASO) and offers a "Pay-for-Performance" ASO service.
Localization opens up great opportunities for growth, which should be taken advantage of to establish your presence in foreign markets.
Your app description on Google Play is the first item of information that users receive, and it's aimed at getting them interested. To simplify the process of creating the text part, you can use our template and follow the steps below:
A compelling description is one of the key factors for a successful start of your app.
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