Q81. The construction project faced delays due to unexpected ___________ issues.

Q82. Find the \(f^{'}(x) = \frac{d}{dx}(e^{-ln \: x})\).

Q83. Equations \(x = 3\cos{t}\) and \(y = 3\sin{t}\) represent the eqation of

Q84. The team members discussed the project ___________ during the meeting.

Q85. If she ________ to the party, she would have met many interesting people.

Q86. Choose the sentence with the correct use of the modal verb.

Q87. Identify the sentence with the correct use of the present perfect tense.

Q88. Choose a synonym for "vivid."

Q89. Identify the sentence with the correct use of the relative pronoun.

Q90. Which of the following states that if \( \lim\limits_{x \to a} f(x) = 0 \) and \( \lim\limits_{x \to a} g(x) = 0 \) , then \( \lim\limits_{x \to a} \frac{f(x)}{g(x)}= \lim\limits_{x \to a} \frac{\frac{df(x)}{dx}}{\frac{dg(x)}{dx}} \)