Chapter 15: Anjaan ko Dhoondhna
Rahasya dibbon wala taraazu, tiliyon ka pattern, number paheli: har ek mein ek anjaan number chhupa hai. Is chapter mein hum aisi sthitiyon ko equations mein likhenge, dono taraf ek jaisa karke kadam-kadam hal karenge, jawaab jaanchenge, aam galtiyan pakdenge aur sudhaarenge, aur sadiyon pehle Bharatiya ganitagyon ke hal kiye sawaalon se milenge.
Is chapter mein tum
- sthitiyon ke liye equations likhna
- taraazu aur ulte kadam se equations hal karna
- dono taraf akshar aur bracket wale equations hal karna
- hal jaanchna aur galtiyan sudhaarna
Topics
- Anjaan Dhoondho NCERT P2 7.1
Equation kehta hai do expressions barabar; hal use sach banaata hai.
- Equations ko Vidhi se Hal Karna NCERT P2 7.2
Kriyaaon ko ulte kram mein ulta karo, dono taraf ek jaisa.
- Galti Pakdo, Galti Sudhaaro NCERT P2 7.3–7.4
Har hal ko equation mein waapas rakhkar jaancho.
Key words
- Equation
- do expressions ke barabar hone ka kathan
- Unknown
- jiska maan chahiye wo akshar
- Solution
- equation ko sach banaane wala maan
- Balance
- dono taraf ek jaisa karne se equation sach rehta hai
- Coefficient
- akshar se guna hone wala number, jaise 3x mein 3
Summary
- Equation taraazu jaisa: dono taraf ek jaisa karo.
- Kriyaaein ulte kram mein ulti karo; akshar ek taraf aur numbers doosri.
- Anjaan ka naam rakhkar shabd-sawaal ko equation banao.
- Har hal jaancho; Brahmagupta: Ax + B = Cx + D se x = (D − B) ÷ (A − C).