D DAAN New member Joined Oct 26, 2007 Messages 1 Oct 26, 2007 #1 Can you please tell me what I did wrong for this problem: f (x) = 3 (x^1/2) sinx f'(x) 3 (x^1/2) cosx + (3sinx)/2(x^1/2) Thanks..
Can you please tell me what I did wrong for this problem: f (x) = 3 (x^1/2) sinx f'(x) 3 (x^1/2) cosx + (3sinx)/2(x^1/2) Thanks..
S soroban Elite Member Joined Jan 28, 2005 Messages 5,584 Oct 27, 2007 #2 Re: Derivative of trig func Hello, DAAN! Can you please tell me what I did wrong for this problem: \(\displaystyle f(x) \:=\: 3x^{\frac{1}{2}}\cdot\sin x\) \(\displaystyle f'(x)\:=\: 3 x^{\frac{1}{2}}\cdot\cos x\,+\,\frac{3\cdot\sin x}{2x^{\frac{1}{2}}}\) Click to expand... Your answer is correct . . . Who said it was wrong?
Re: Derivative of trig func Hello, DAAN! Can you please tell me what I did wrong for this problem: \(\displaystyle f(x) \:=\: 3x^{\frac{1}{2}}\cdot\sin x\) \(\displaystyle f'(x)\:=\: 3 x^{\frac{1}{2}}\cdot\cos x\,+\,\frac{3\cdot\sin x}{2x^{\frac{1}{2}}}\) Click to expand... Your answer is correct . . . Who said it was wrong?
