1/x+4 -1/x-7 =11/30;xisnotequal-4, 7 solve the equation converting into a quadratic equation
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- 3 < x < 3 2. - 1 ~ x ~ 0 3. - j3 ~ x ~ - 1 or 1 ~ x ~ j3. 4. x < 3 or x > 7 5. ... One can see that this equation is an ellipse by converting to (x, ... Of course, the function is not defined when cos 8 = O. Since. -1
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