b^-7/b^-5 eching

$$\frac { b ^ { - 7 } } { b ^ { - 5 } }$$

b ga nisbatan hosilani topish

$$-\frac{2}{b^{3}}$$

Yechim qadamlari

Ayni asosning daraja ko'rsatkichi bo'lish uchun maxrajning darajasini surat darajasidan bo'ling.

$$\frac{\mathrm{d}}{\mathrm{d}b}(\frac{1}{1}b^{-7-\left(-5\right)})$$

Arifmetik hisobni amalga oshirish.

$$\frac{\mathrm{d}}{\mathrm{d}b}(b^{-2})$$

Polinomialning hosilasi bu uning shartlari hosilasining yig‘indisiga teng. Konstant shartning hosilasi 0. ax^{n} ning hosilasi nax^{n-1}.

$$-2b^{-2-1}$$

Arifmetik hisobni amalga oshirish.

$$-2b^{-3}$$

Baholash

$$\frac{1}{b^{2}}$$

Yechim qadamlari

b^{-5} ni b^{-7}b^{2} sifatida qaytadan yozish. Surat va maxrajdagi ikkala b^{-7} ni qisqartiring.

$$\frac{1}{b^{2}}$$