\[E \cdot \frac{du}{dr} - \sigma_r + \nu \sigma_t = E \cdot \alpha T \tag{1}\]
\iint \exp{\left(-x^4-y^4-x^2y^2\right)}\,dx dy
Y = x^2 + 4x +3
y= x^2-6x+8
whats the porabula
the tempriture
g(x)= log(x+2)
3 x 12 = 6 x _
what is the time
Given that: f(x)=5-2x
Calculate: f(7/2)
Calculate: f(72)
sum of first 90 even natural numbers
