
Get live Maths 1-on-1 Classs - Class 6 to 12
Ex 7.9
Ex 7.9, 2
Ex 7.9, 3 You are here
Ex 7.9, 4 Important
Ex 7.9, 5
Ex 7.9, 6
Ex 7.9, 7
Ex 7.9, 8 Important
Ex 7.9, 9
Ex 7.9, 10
Ex 7.9, 11 Important
Ex 7.9, 12
Ex 7.9, 13
Ex 7.9, 14 Important
Ex 7.9, 15
Ex 7.9, 16 Important
Ex 7.9, 17 Important
Ex 7.9, 18
Ex 7.9, 19 Important
Ex 7.9, 20 Important
Ex 7.9, 21 (MCQ) Important
Ex 7.9, 22 (MCQ)
Last updated at March 16, 2023 by Teachoo
Ex7.9, 3 12(4𝑥3−5𝑥2+6𝑥+9) 𝑑𝑥 Step 1 :- F 𝑥= 4 𝑥3−5 𝑥2+6𝑥+9𝑑𝑥 = 4 𝑥3+13+1− 5 𝑥2+12+1+ 6 𝑥1+11+1+9𝑥 = 4 𝑥44− 5 𝑥33+ 6 𝑥22+9𝑥 = 𝑥4− 53 𝑥3+ 3𝑥2+9𝑥 Hence f(x) =𝑥4− 3 𝑥33+3 𝑥2+9𝑥 Step 2 :- 12 4 𝑥2−9 𝑥2+6𝑥+9𝑑𝑥 =𝐹 2−𝐹 1 = 24− 53 23+3 22+9 2− 14− 53 × 13+3 × 12+9 ×1 =16− 53 ×8+3 ×4+9 ×2−1+ 53−3−9 =16− 403 +12+18−1+ 53−3−9 =33− 353 = 3 33 − 353 = 𝟔𝟒𝟑