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In Problems 17–26 classify the given partial differential equation as hyperbolic, parabolic, or elliptic.
17.
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Differential Equations with Boundary-Value Problems (MindTap Course List)
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- The differential equation dy = x* + y* is not separable as 3 4 4 xy³ dx written. However, assuming x + 0, you can make the substitution v = (that is, y = vx ), dy in terms of dx and then write dv and x. (Remember y and v are dx functions of x, so use implicit differentiation.) This gives dy dx dv + dx Using that result, you can rewrite the dy = x* + y´ as 3 4 original equation xy° = da separable equation in v and x: dv v + x dx Then separate the equation so that 1 dx dv || ||arrow_forward4. Determine when the following pairs of functions are linearly independent. (a) yı(t) = erit; y(t) = er²t, r₁,72 € R (b) y(t) = cos(at); 32(t) = sin(at), a = R (c) y₁ (t) = cosh(at); y₂(t) = sinh(at), a € Rarrow_forward(12) If y = a X"-b X*+1 +5 is a polynomial and a s bER* , then d" y may by represent dX" by one of the following figures (b) ().arrow_forward
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