Use I'Hopital's Rule more than once to rewrite the limit in its final form as lim x --> 0 lim x --> 0 e^x -sinx - 1/ x^4 + 7x^3 + 8x^2

To compute the limit

notice that when x = 0, both the numerator and denominator converge to 0. Apply l'Hopital's rule once gives

but again, this returns the indeterminate form 0/0. Applying again gives

so that the numerator converges to e⁰ + sin(0) = 1, and the denominator converges to 12•0² + 42•0 + 16 = 16.

So the limit is 1/16.

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°

it’s the first one your welcome