Bài tập toán cơ bản số 45

Created by T Madas Question 53 Rearrange the following formulae for the variable written inside the square bracket a) y = x2 a2 − x2 b) x = y y +1 c) x = y −1 2y d) x = e) x = f) x=2 [ x] (****+) ya y +1 x=± x2 (****+) y= [ y] (****+) y= 4y 3− y [ y] (****+) y= y +1 y −1 [ y] (****+) y= (****+) y= (****+) y=± (****+) y = ± x2 + y y −1 g) x = y2 −1 y h) x = y2 − [ y] [ y] [ y] [ y] Created by T Madas − x2 1 − x2 3x x2 + x2 + x2 − x2 x2 − 4 16− x2 Created by T Madas Question 54 Rearrange the following formulae for the variable written inside the square bracket y2 x2 − = y2 +1 x2 (****+) y = ± x2 − (****+) gT L= 4π (****+) L = r2 + (****+) a= ( A − hb ) h+b (****+) u= vf f −v f) u = v − 2u [u ] (*****) u = −1 ± v + g) x + y = xy + z [ x] (*****) x= y±z h) x + x = y [ x] (*****) x = y + 1 ± y +  a) L b) T = 2π g [ y] [ L] c) V = π r L2 − r [ L] d) A = h ( a + b ) + b ( a + h ) [a ] 2 e) 1 − = [u ] v u f Created by T Madas 9V π 2r