For the cell reaction, \( 2Al(s) + 3Cu^{2+}_{(aq)} \rightarrow 2Al^{3+}_{(aq)} + 3Cu(s) \), if \( \Delta G^\circ = -1158 \, \text{kJ} \), what is \( E_{\text{cell}} \)?
A particular solution of \( 3e^x \tan y \, dx + (1 - e^x)\sec^2 y \, dy = 0 \) with \( y(1) = \frac{\pi}{4} \) is:
If \( \sin^{-1}x + \sin^{-1}y = \frac{\pi}{6} \) and \( \cot^{-1}\left(\frac{1}{2}\right) - \cot^{-1}\left(\frac{1}{y}\right) = 0 \), then calculate \( 2x^2 + y^2 - xy = ? \)
If \( f(x) = \frac{k \sin x + 2 \cos x}{\sin x + \cos x} \) is strictly increasing for all real values of \( x \), then:
A random variable \( X \) has p.m.f. \( P(X = x) = \frac{{}^{4}C_x}{2^4}, \quad x = 0, 1, 2, 3, 4 \), and \( \mu \) and \( \sigma^2 \) are the mean and variance respectively of the random variable \( X \), then:
If \( \sin\left(\frac{\pi}{4}\cot\theta\right) = \cos\left(\frac{\pi}{4}\tan\theta\right) \), then the general solution of \( \theta \) is:
If \( A, B, C \) are mutually exclusive and exhaustive events of a sample space \( S \) such that \( P(B) = \frac{3}{2}P(A) \) and \( P(C) = \frac{1}{2}P(B) \), then \( P(A) = \) ______.
The equation of a progressive wave is \( Y = 3 \sin\left(kx - \frac{\pi}{3}\right) + \frac{1}{2} \), where \(x\) and \(y\) are in meter and time is in second. Which of the following is correct?