Derivation of $1 = x^2+y^2$ with respect to time
40960
Implicit Differentiation
114505
Initial value problem $t\frac{dx}{dt}=x+\sqrt{t^2+x^2}$
106863
Special relativity and imaginary coefficient of the time coordinate
20962
Derivation of Archimedes' principle
95774
$\frac{\partial^2 u}{\partial t^2}-c^2\frac{\partial^2u}{\partial x^2}=0\text{ implies } \frac{\partial^2 u}{\partial z \partial y}=0$
153686
Is time a Scalar or a Vector?
126388
Derivation of Lorentz Transformations
116520
formula for the $n$th derivative of $e^{-1/x^2}$
142845
is $y = \sqrt{x^2 + 1}− x$ a injective (one-to-one) function?
73073
Differentiating $y=x^{2}$
122957
Intuitive proof of multivariable changing of variables formula (jacobian) without using mapping and/or measure theory?
45725
Derivation of an identity with beta function.
131769
How to derive this second derivative using the quotient rule?
64727
Total time derivatives and partial coordinate derivatives in classical mechanics
140576
Time reversal symmetry and T^2 = -1
138575
Proof that $\cos^2(x)\cosh^2(y) + \sin^2(x)\sinh^2(y) = -1 + \sin^2(x) - \sinh^2(y)$
75279
Reversing the $T(n) = \frac{n(n+1)}{2}$ formula