Notes 3
If x + y + z = 0, then find the value of x3 + y3 + z3 – 3xyz. Given: x + y + z = 0 Concept Used: x3 + y3 + z3 = {(x + y + z) × (x2 + y2 + z2 – xy – yz – zx)} + 3xyz Calculation: ⇒ x3 + y3 + z3 = {(x + y + z) × (x2 + y2 + z2 – xy – yz – zx)}…
Notes 2
In a ΔABC, right angled at B, if tan A = \(\frac{1}{{\sqrt 3 }}\), then sin A . cos C + cos A . sin C = ______. GIVEN: Triangle ABC ,right angled at B i.e. angle B = \(90^\circ\) tan A = \(1\over\sqrt3\) FORMULA USED: tan A = P/B sin A= P/H Cos C= B/H where , P =…
Note 1
In an election between two candidates, 80% of the eligible voters cast their votes, 5% of the votes cast were declared invalid. A candidate got 10545 votes, which were 75% of the total valid votes. Find the total number of eligible voters. Given: 80% of the eligible voters cast their votes, In which 5% were…
Python- How to Use Requests
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PHP- How to Use Requests
In PHP, you can use the file_get_contents function or the curl extension to send HTTP requests to a server and retrieve the response. Here is an example of how to use file_get_contents to send a GET request and retrieve the response from a server: You can also use the stream_context_create function to specify additional options…
PHP- How to Connect Database
PHP can be used to interact with databases, allowing you to store and retrieve data from a database in your web application. To use a database with PHP, you will need to have a database management system (DBMS) installed on your server, such as MySQL, MariaDB, or PostgreSQL. To connect to a database from a…
PHP- How to Make Forms
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PHP- How to Use Objects
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PHP- How to Use Arrays
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PHP- How to use Functions
PHP is a programming language that is commonly used for web development. One of the key features of PHP is the ability to create and use functions. In this article, we will look at some examples of how to use functions in PHP. A function is a block of code that performs a specific task….