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GANITASHISHYA (गणिताशिष्य)
Приєднався 16 чер 2016
Why connect with our channel ???
Here are a few compelling reasons: -
1. Expert Guidance: - Our channel likely features expert educator, who simplify complex mathematical concepts, making them easier to understand and apply.
2. Comprehensive Coverage: - From fundamental principles to advanced topics, our channel covers the entire syllabus, ensuring students don't miss out on any crucial concepts.
3. Exam Preparation: - With tips, tricks, and strategies for excelling in exams, our channel helps students prepare effectively for their tests and board exams.
5. Accessibility: - Our channel provides free access to quality education, making it easier for students from all backgrounds to learn and succeed.
By subscribing to our channel, students gain a reliable and comprehensive resource for mastering class 11 and 12 mathematics, boosting their confidence and performance in exams.
Whatsapp on 9528824424
Facebook link: - profile.php?id=100065032722168&mibextid=LQQJ4d
Here are a few compelling reasons: -
1. Expert Guidance: - Our channel likely features expert educator, who simplify complex mathematical concepts, making them easier to understand and apply.
2. Comprehensive Coverage: - From fundamental principles to advanced topics, our channel covers the entire syllabus, ensuring students don't miss out on any crucial concepts.
3. Exam Preparation: - With tips, tricks, and strategies for excelling in exams, our channel helps students prepare effectively for their tests and board exams.
5. Accessibility: - Our channel provides free access to quality education, making it easier for students from all backgrounds to learn and succeed.
By subscribing to our channel, students gain a reliable and comprehensive resource for mastering class 11 and 12 mathematics, boosting their confidence and performance in exams.
Whatsapp on 9528824424
Facebook link: - profile.php?id=100065032722168&mibextid=LQQJ4d
LECTURE 1 QUADRATIC EQUATIONS CHAPTER 8 CLASS 11
1. Introduction to Quadratic Equations: - A quadratic equation is a second-degree polynomial equation in a single variable x, with the highest power of x being 2. The general form of a quadratic equation is: -
ax^2 + bx + c = 0
where: - a, b, and c are constants,
a not equal to zero and x is the variable to be solved.
Quadratic equations arise frequently in various mathematical and real-world problems, such as physics, engineering, economics, and more.
2. Forms of Quadratic Equations: -
(i) Standard form: - ax^2 + bx + c = 0, where a, b, and c are constants.
(ii) Factorized form: - a(x - p)(x - q) = 0, where p and q are the roots of the equation.
(iii) Vertex form: - a(x - h)^2 + k = 0, where (h, k) is the vertex of the parabola.
3. Solutions of Quadratic Equations: -
(i) Factorization method: - If a quadratic equation can be factored, the roots can be found by setting each factor equal to zero.
Example: - x^2 - 5x + 6 = 0
(x - 2)(x - 3) = 0
Roots are x = 2 and x = 3.
(ii) Quadratic formula: - If the quadratic equation cannot be factored easily, the roots can be found using the quadratic formula (shri Dharacharya’s Formula): - x = -b plus minus sqrt{b^2 - 4ac}/{2a} Here, b^2 - 4ac is called the discriminant (D).
Based on the discriminant, we can determine the nature of the roots:
- If D greater than 0, the equation has real, distinct and irrational roots.
- If D = 0, the equation has real and equal roots.
- If D less than 0, the equation has complex and distinct roots.
- If D greater than zero and a perfect square, the equation has real, distinct and rational roots.
(iii) Completing the square: - This method involves rewriting the quadratic equation in the form (x - h)^2 = k, and then solving for x. Example: - x^2 + 6x + 9 = 0
(x + 3)^2 = 0
X = -3, -3
4. Sum and product of roots: - For the quadratic equation ax^2 + bx + c = 0,
- Sum of the roots: - p+q = -b/a = -(Coefficient of x)/Coefficient of x^2.
- Product of the roots: - pq = c/a = Constant/Coefficient of x^2.
- If roots of quadratic equation are given then the quadratic equation is: - x^2- (sum of roots) + (product of roots) = 0.
5. Graph of a Quadratic Equation: - The graph of a quadratic equation y = ax^2 + bx + c is a parabola.
- If a is greater than zero, the parabola opens upwards.
- If a is less than zero, the parabola opens downwards.
- The vertex of the parabola is the point (-b/2a,-D/4a).
This basic introduction should provide students with a solid foundation to understand and solve quadratic equations.
ax^2 + bx + c = 0
where: - a, b, and c are constants,
a not equal to zero and x is the variable to be solved.
Quadratic equations arise frequently in various mathematical and real-world problems, such as physics, engineering, economics, and more.
2. Forms of Quadratic Equations: -
(i) Standard form: - ax^2 + bx + c = 0, where a, b, and c are constants.
(ii) Factorized form: - a(x - p)(x - q) = 0, where p and q are the roots of the equation.
(iii) Vertex form: - a(x - h)^2 + k = 0, where (h, k) is the vertex of the parabola.
3. Solutions of Quadratic Equations: -
(i) Factorization method: - If a quadratic equation can be factored, the roots can be found by setting each factor equal to zero.
Example: - x^2 - 5x + 6 = 0
(x - 2)(x - 3) = 0
Roots are x = 2 and x = 3.
(ii) Quadratic formula: - If the quadratic equation cannot be factored easily, the roots can be found using the quadratic formula (shri Dharacharya’s Formula): - x = -b plus minus sqrt{b^2 - 4ac}/{2a} Here, b^2 - 4ac is called the discriminant (D).
Based on the discriminant, we can determine the nature of the roots:
- If D greater than 0, the equation has real, distinct and irrational roots.
- If D = 0, the equation has real and equal roots.
- If D less than 0, the equation has complex and distinct roots.
- If D greater than zero and a perfect square, the equation has real, distinct and rational roots.
(iii) Completing the square: - This method involves rewriting the quadratic equation in the form (x - h)^2 = k, and then solving for x. Example: - x^2 + 6x + 9 = 0
(x + 3)^2 = 0
X = -3, -3
4. Sum and product of roots: - For the quadratic equation ax^2 + bx + c = 0,
- Sum of the roots: - p+q = -b/a = -(Coefficient of x)/Coefficient of x^2.
- Product of the roots: - pq = c/a = Constant/Coefficient of x^2.
- If roots of quadratic equation are given then the quadratic equation is: - x^2- (sum of roots) + (product of roots) = 0.
5. Graph of a Quadratic Equation: - The graph of a quadratic equation y = ax^2 + bx + c is a parabola.
- If a is greater than zero, the parabola opens upwards.
- If a is less than zero, the parabola opens downwards.
- The vertex of the parabola is the point (-b/2a,-D/4a).
This basic introduction should provide students with a solid foundation to understand and solve quadratic equations.
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Introduction to the Principle of Mathematical Induction The Principle of Mathematical Induction (PMI) is a powerful method of proof used to establish the truth of an infinite number of statements, typically indexed by natural numbers. It helps us prove that a statement is true for all natural numbers, starting from a base case and then showing that if it holds for one natural number, it holds f...
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Thanks sir ❤❤
Most welcome
Thanks sir ❤
Most welcome
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Thank you beta
Sir aapne jo last m likha h Vo dikha nhi iss class m
Beta my whatsapp no is 9528824424 mujhe screenshot share kar do aap
Ya fer mujhe comment me bata do kis line ke bad problem aa rahi hai
Aapne jo set builder form ka example diya h A={ 2,4,6,8} Iske next wali line show nhi ho rhi
It is A = {x:x, x is an even number, x less than equal to x}
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I am a student of asheesh sir..he is very genius
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Aap jaari rakhiye । Bacche aap tak pahunch jaayenge
Thanks dear Sandeep I’ll try my best. Thanks again
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Dear, we are trying to teach methods not questions
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Sir, find you randomly but der aay durust aay , mai abhi 12th me hu , aap 12th ka bhi content banayiye
Dear Anubhav thank you for your interest. we have already uploaded 2 chapters of 12th and next third chapter inverse trigonometry will be uploaded in next 5 days.
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