Tất cả các nguyên hàm của hàm \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaGaamOzamaabm % aabaGaamiEaaGaayjkaiaawMcaaiabg2da9maalaaabaGaaGymaaqa % amaakaaabaGaaG4maiaadIhacqGHsislcaaIYaaaleqaaaaaaaa!3EB4! f\left( x \right) = \frac{1}{{\sqrt {3x - 2} }}\) là:
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Lời giải:
Báo saiTa có:
+) Đáp án A: \(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaeWaaeaaca % aIYaWaaOaaaeaacaaIZaGaamiEaiabgkHiTiaaikdaaSqabaGccqGH % RaWkcaWGdbaacaGLOaGaayzkaaGaai4jaiabg2da9maalaaabaGaaG % Omaiaac6cacaaIZaaabaGaaGOmamaakaaabaGaaG4maiaadIhacqGH % sislcaaIYaaaleqaaaaakiabg2da9maalaaabaGaaG4maaqaamaaka % aabaGaaG4maiaadIhacqGHsislcaaIYaaaleqaaaaakiabgcMi5oaa % laaabaGaaGymaaqaamaakaaabaGaaG4maiaadIhacqGHsislcaaIYa % aaleqaaaaakiabgkDiEdaa!536D! \left( {2\sqrt {3x - 2} + C} \right)' = \frac{{2.3}}{{2\sqrt {3x - 2} }} = \frac{3}{{\sqrt {3x - 2} }} \ne \frac{1}{{\sqrt {3x - 2} }} \Rightarrow \) đáp án A sai.
+) Đáp án B:\(% MathType!MTEF!2!1!+- % feaahqart1ev3aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn % hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr % 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq-Jc9 % vqaqpepm0xbba9pwe9Q8fs0-yqaqpepae9pg0FirpepeKkFr0xfr-x % fr-xb9adbaqaaeGaciGaaiaabeqaamaabaabaaGcbaWaaeWaaeaada % WcaaqaaiaaikdaaeaacaaIZaaaamaakaaabaGaaG4maiaadIhacqGH % sislcaaIYaaaleqaaOGaey4kaSIaam4qaaGaayjkaiaawMcaaiaacE % cacqGH9aqpdaWcaaqaaiaaikdacaGGUaGaaG4maaqaaiaaiodacaGG % UaGaaGOmamaakaaabaGaaG4maiaadIhacqGHsislcaaIYaaaleqaaa % aakiabg2da9maalaaabaGaaGymaaqaamaakaaabaGaaG4maiaadIha % cqGHsislcaaIYaaaleqaaaaakiabgkDiEdaa!4F8D! \left( {\frac{2}{3}\sqrt {3x - 2} + C} \right)' = \frac{{2.3}}{{3.2\sqrt {3x - 2} }} = \frac{1}{{\sqrt {3x - 2} }} \Rightarrow \) đáp án B đúng.
Đề thi thử tốt nghiệp THPT QG môn Toán năm 2020
Tuyển chọn số 4