Bhai, waise toh kahte hain ki upper wali function minus lower wali function karte hain, line aur curve ke beech ka area nikalne ke liye. Par humare yahan coaching master ne ek seedha tarika bataya: dono ko ek hi graph paper pe banao, dekhlo kaun si curve upar hai, usi ko pehle likho, phir ghata do niche wali ko. Aasan rehta hain.
Mera toh khud calculus me jhamela rahta hain, kabhi-kabhi galat subtract kar deta hoon aur answer negative aa jata hain... phir pura page kaat ke dobara banaana padta hain, bilkul salon me kisi ke baal chote karne ke baad waise hi!
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